<13 chrs TAPivo://ksb-orb.dc/tapYour organisation's nameCould be same as contact.namehttps://vo-tap.oma.be/favicon.png2026-05-28T22:24:53ZFill Out

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invalid@example.comDelete this line if you don't want to give itvirtual-observatoriescatalogsThe ROB Virtual Observatory Data Center's TAP end point. The Table Access Protocol (TAP) lets you execute queries against our database tables, inspect various metadata, and upload your own data. It is thus the VO's premier way to access public data holdings. Tables exposed through this endpoint include: datalink, epn_core, tracking from the rob_spoca_ch schema, columns, groups, key_columns, keys, schemas, tables from the tap_schema schema, epn_core from the uset_caii schema, epn_core, epn_links from the uset_sunspot_drawing schema, epn_core from the uset_sunspot_group schema.https://vo-tap.oma.be/__system__/tap/run/infoIsServiceForUSET CaIIK Solar ImagesSPoCA Coronal HoleSPoCA Coronal HoleSPoCA Coronal HoleUSET DrawingsUSET GroupsUSET DrawingsROB Virtual Observatory Data Center Obscore Tablehttps://vo-tap.oma.be/tapADQL2.02.1The Astronomical Data Query Language is the standard IVOA dialect of SQL; it contains a very general SELECT statement as well as some extensions for spherical geometry and higher mathematics.

gavo_apply_pm(ra DOUBLE PRECISION, dec DOUBLE PRECISION, pmra DOUBLE PRECISION, pmde DOUBLE PRECISION, epdist DOUBLE PRECISION) -> POINT

Returns a POINT (in the UNDEFINED reference frame) for the position an object at ra/dec with proper motion pmra/pmde has after epdist years. positions must be in degrees, PMs in should be in julian years (i.e., proper motions are expected in degrees/year). pmra is assumed to contain cos(delta). This function goes through the tangential plane. Since it does not have information on distance and radial velocity, it cannot reconstruct the true space motion, and hence its results will degrade over time. This function should not be used in new queries; use ivo_epoch_prop instead.

gavo_getauthority(ivoid TEXT) -> TEXT

returns the authority part of an ivoid (or, more generally a URI). So, ivo://org.gavo.dc/foo/bar#baz becomes org.gavo.dc. The behaviour for anything that's not a full URI is undefined.

gavo_ipix(long REAL, lat REAL) -> BIGINT

gavo_ipix returns the q3c ipix for a long/lat pair (it simply wraps the 13c_ang2ipix function). This is probably only relevant when you play tricks with indices or PPMXL ids.

gavo_match(pattern TEXT, string TEXT) -> INTEGER

gavo_match returns 1 if the POSIX regular expression pattern matches anything in string, 0 otherwise.

gavo_mocintersect(moc1 MOC, moc2 MOC) -> MOC

returns the intersection of two MOCs.

gavo_mocunion(moc1 MOC, moc2 MOC) -> MOC

returns the union of two MOCs.

gavo_specconv(expr DOUBLE PRECISION, dest_unit TEXT) -> DOUBLE PRECISION

returns the spectral value expr converted to dest_unit. expr has to be in either energy, wavelength, or frequency, and dest_unit must be a VOUnit giving another spectral unit (e.g., MHz, keV, nm, or Angstrom). This is intended to let users express spectral constraints in their preferred unit independently of the choice of unit in the database. Examples:: gavo_specconv(obscore.em_min, "keV") > 300 gavo_specconv(obscore.em_max, "MHz") > 30 gavo_specconv(spectral_start, "Angstrom") > 4000 There is a variant of gavo_specconv accepting expr's unit in a third argument.

gavo_specconv(expr NUMERIC, expr_unit TEXT, dest_unit TEXT) -> NUMERIC

returns expr assumed to be in expr_unit expressed in dest_unit. This is a variant of the two-argument gavo_specconv for when the unit of expr is not known to the ADQL translator, either because it because it is a literal or because it does not look like a spectral unit. Examples:: gavo_specconv(656, 'nm', 'J') BETWEEN spectral_start AND spectral_end gavo_specconv(arccos(phi)*incidence, 'Hz', 'eV') Clearly, overriding known units is likely to yield bad results; the translator therefore warns if an existing unit is overridden with a different unit.

gavo_vocmatch(vocname TEXT, term TEXT, matchagainst TEXT) -> INTEGER

returns 1 if matchagainst is term or narrower in the IVOA vocabulary vocname, 0 otherwise. This is intended for semantic querying. For instance, gavo_vocmatch('datalink/core', 'calibration', semantics) would be 1 if semantics is any of calibration, bias, dark, or flat. For RDF-flavoured vocabularies (strict trees), term will expand to the entire branch rooted in term. For SKOS-flavoured vocabularies (where narrower is not transitive), only directly narrower terms will be included. Both the term and the vocabulary name must be string literals (i.e., constants). matchagainst can be any string-valued expression.

ivo_epoch_prop(ra DOUBLE PRECISION, dec DOUBLE PRECISION, parallax DOUBLE PRECISION, pmra DOUBLE PRECISION, pmdec DOUBLE PRECISION, radial_velocity DOUBLE PRECISION, ref_epoch DOUBLE PRECISION, out_epoch DOUBLE PRECISION) -> DOUBLE PRECISION[6]

Returns a 6-vector of (ra, dec, parallax, pmra, pmdec, rv) at out_epoch for these quantities at ref_epoch. Essentially, it will apply the proper motion under the assumption of linear motion. Despite the name of the positional parameters, this is not restricted to equatorial systems, as long as positions and proper motions are expressed in the same reference frames. Units on input and output are degrees for ra and dec, mas for parallax, mas/yr for pmra and pmdec, and km/s for the radial velocity. ref_epoch and out_epoch are given in Julian years. parallax, pmra, pmdec, and radial_velocity may be None and will enter the computations as 0 then, except in the case of parallax, which will be some small value. When abs(parallax) is smaller or equal to that small value, parallax and radial velocity will be NULL on output. In daily use, you probably want to use the ivo_epoch_prop_pos functions.

ivo_epoch_prop_pos(ra DOUBLE PRECISION, dec DOUBLE PRECISION, parallax DOUBLE PRECISION, pmra DOUBLE PRECISION, pmdec DOUBLE PRECISION, radial_velocity DOUBLE PRECISION, ref_epoch DOUBLE PRECISION, out_epoch DOUBLE PRECISION) -> POINT

Returns a POINT giving the position at out_epoch for an object with the six parameters at ref_epoch. Essentially, it will apply the proper motion under the assumption of linear motion. Despite the name of the positional parameters, this is not restricted to equatorial systems, as long as positions and proper motions are expressed in the same reference frames. Units on input are degrees for ra and dec, mas for parallax, mas/yr for pmra and pmdec, and km/s for the radial velocity. ref_epoch and out_epoch are given in Julian years. parallax, pmra, pmdec, and radial_velocity may be None and will enter the computations as 0 then, except in the case of parallax, which will be some small value.

ivo_epoch_prop_pos(ra DOUBLE PRECISION, dec DOUBLE PRECISION, pmra DOUBLE PRECISION, pmdec DOUBLE PRECISION, ref_epoch DOUBLE PRECISION, out_epoch DOUBLE PRECISION) -> POINT

A variant of ivo_epoch_prop_pos that behave as if parallax and radial_velocity were both passed as NULL.

ivo_geom_transform(from_sys TEXT, to_sys TEXT, geo GEOMETRY) -> GEOMETRY

The function transforms ADQL geometries between various reference systems. geo can be a POINT, a CIRCLE, or a POLYGON, and the function will return a geometry of the same type. In the current implementation, from_sys and to_sys must be literal strings (i.e., they cannot be computed through expressions or be taken from database columns). All transforms are just simple rotations, which is only a rough approximation to the actual relationships between reference systems (in particular between FK4 and ICRS-based ones). Note that, in particular, the epoch is not changed (i.e., no proper motions are applied). We currently support the following reference frames: ICRS, FK5 (which is treated as ICRS), FK4 (for B1950. without epoch-dependent corrections), GALACTIC. Reference frame names are case-sensitive.

ivo_hashlist_has(hashlist TEXT, item TEXT) -> INTEGER

The function takes two strings; the first is a list of words not containing the hash sign (#), concatenated by hash signs, the second is a word not containing the hash sign. It returns 1 if, compared case-insensitively, the second argument is in the list of words coded in the first argument. The behaviour in case the the second argument contains a hash sign is unspecified.

ivo_hasword(haystack TEXT, needle TEXT) -> INTEGER

gavo_hasword returns 1 if needle shows up in haystack, 0 otherwise. This is for "google-like"-searches in text-like fields. In word, you can actually employ a fairly complex query language; see https://www.postgresql.org/docs/current/textsearch.html for details.

ivo_healpix_center(hpxOrder INTEGER, hpxIndex BIGINT) -> POINT

returns a POINT corresponding to the center of the healpix with the given index at the given order.

ivo_healpix_index(order INTEGER, ra DOUBLE PRECISION, dec DOUBLE PRECISION) -> BIGINT

Returns the index of the (nest) healpix with order containing the spherical point (ra, dec). An alternative, 2-argument form ivo_healpix_index(order INTEGER, p POINT) -> BIGINT is also available.

ivo_histogram(val REAL, lower REAL, upper REAL, nbins INTEGER) -> INTEGER[]

The aggregate function returns a histogram of val with nbins+2 elements. Assuming 0-based arrays, result[0] contains the number of underflows (i.e., val<lower), result[nbins+1] the number of overflows. Elements 1..nbins are the counts in nbins bins of width (upper-lower)/nbins. Clients will have to convert back to physical units using some external communication, there currently is no (meta-) data as lower and upper in the TAP response.

ivo_interval_has(val NUMERIC, iv INTERVAL) -> INTEGER

The function returns 1 if the interval iv contains val, 0 otherwise. The lower limit is always included in iv, behaviour on the upper limit is column-specific.

ivo_interval_overlaps(l1 NUMERIC, h1 NUMERIC, l2 NUMERIC, h2 NUMERIC) -> INTEGER

The function returns 1 if the interval [l1...h1] overlaps with the interval [l2...h2]. For the purposes of this function, the case l1=h2 or l2=h1 is treated as overlap. The function returns 0 for non-overlapping intervals.

ivo_nocasematch(value TEXT, pattern TEXT) -> INTEGER

ivo_nocasematch returns 1 if pattern matches value, 0 otherwise. pattern is defined as for the SQL LIKE operator, but the match is performed case-insensitively. This function in effect provides a surrogate for the ILIKE SQL operator that is missing from ADQL. On this site, this is actually implemented using python's and SQL's LOWER, so for everything except ASCII, your mileage will vary.

ivo_normal_random(mu REAL, sigma REAL) -> REAL

The function returns a random number drawn from a normal distribution with mean mu and width sigma. Implementation note: Right now, the Gaussian is approximated by summing up and scaling ten calls to random. This, hence, is not very precise or fast. It might work for some use cases, and we will provide a better implementation if this proves inadequate.

ivo_simbadpoint(identifier TEXT) -> POINT

gavo_simbadpoint queries simbad for an identifier and returns the corresponding point. Note that identifier can only be a literal, i.e., as simple string rather than a column name. This is because our database cannot query simbad, and we probably wouldn't want to fire off millions of simbad queries anyway; use simbad's own TAP service for this kind of application.

ivo_string_agg(expression TEXT, delimiter TEXT) -> TEXT

An aggregate function returning all values of expression within a GROUP contcatenated with delimiter

ivo_to_jd(d TIMESTAMP) -> DOUBLE PRECISION

The function converts a postgres timestamp to julian date. This is naive; no corrections for timezones, let alone time scales or the like are done; you can thus not expect this to be good to second-precision unless you are careful in the construction of the timestamp.

ivo_to_mjd(d TIMESTAMP) -> DOUBLE PRECISION

The function converts a postgres timestamp to modified julian date. This is naive; no corrections for timezones, let alone time scales or the like are done; you can thus not expect this to be good to second-precision unless you are careful in the construction of the timestamp.

BOX

POINT

CIRCLE

POLYGON

REGION

CENTROID

COORD1

COORD2

DISTANCE

CONTAINS

INTERSECTS

AREA

COALESCE

LOWER

ILIKE

UPPER

OFFSET

CAST

IN_UNIT

WITH

TABLESAMPLE

Written after a table reference, TABLESAMPLE(10) will make the database only use 10% of the rows; these are `somewhat random' in that the system will use random blocks. This should be good enough when just testing queries (and much better than using TOP n).

MOC

A geometry function creating MOCs. It either takes a string argument with an ASCII MOC ('4/13 17-18 8/3002'), or an order and another geometry.

VECTORMATH

You can compute with vectors here. See https://wiki.ivoa.net/twiki/bin/view/IVOA/ADQLVectorMath for an overview of the functions and operators available.

CASE

The SQL92 CASE expression

UNION

EXCEPT

INTERSECT

text/tab-separated-valuestsvtext/plaintxttext/csvcsv_baretext/csv;header=presentcsvapplication/jsonjsonapplication/geo+jsongeojsonapplication/x-votable+xmlvotableapplication/x-votable+xml;serialization=BINARY2votable/b2votableb2application/x-votable+xml;serialization=TABLEDATAtext/xmlvotable/tdvotabletdapplication/x-votable+xml;serialization=TABLEDATA;version=1.1text/xmlvotabletd1.1application/x-votable+xml;version=1.1text/xmlvotable1.1application/x-votable+xml;serialization=TABLEDATA;version=1.2text/xmlvotabletd1.2application/x-votable+xml;serialization=TABLEDATA;version=1.6vodmlapplication/x-votable+xml;version=1.6vodmlbtext/htmlhtmlapplication/fitsfits1728003600200002000000020000000https://vo-tap.oma.be/__system__/tap/run/availabilityhttps://vo-tap.oma.be/__system__/tap/run/capabilitieshttps://vo-tap.oma.be/__system__/tap/run/tableMetadatatap_schema ROB Virtual Observatory Data Center's Table Access Protocol (TAP) service with table metadata.tap_schema.tablesTables available for ADQL querying.schema_nameFully qualified schema namecharnullabletable_nameFully qualified table namecharindexedprimarytable_typeOne of: table, viewcharnullabledescriptionBrief description of the tableunicodeCharnullableutypeutype if the table corresponds to a data modelcharnullabletable_indexSuggested position this table should take in a sorted list of tables from this data centerintnullablesourcerdId of the originating rd (local information)charnullablenrowsThe approximate size of the table in rowslongnullabletap_schema.schemasschema_nameschema_nametap_schema.columnsColumns in tables available for ADQL querying.table_nameFully qualified table namecharindexedprimarycolumn_nameColumn namecharindexedprimarydescriptionBrief description of columnunicodeCharnullableunitUnit in VO standard formatcharnullableucdUCD of column if anycharnullableutypeUtype of column if anycharnullabledatatypeADQL datatypecharnullablearraysizeArraysize in VOTable notationcharnullablextypeVOTable extended type information (for special interpretation of data content, e.g., timestamps or points)charnullable"size"Legacy length (ignore if you can).intnullableprincipalIs column principal?intindexedIs there an index on this column?intstdIs this a standard column?intsourcerdId of the originating rd (local information)charnullablecolumn_index1-based index of the column in database order.shortnullabletap_schema.tablestable_nametable_nametap_schema.schemasSchemas containing tables available for ADQL querying.schema_nameFully qualified schema namecharindexedprimarydescriptionBrief description of the schemaunicodeCharnullableutypeutype if schema corresponds to a data modelcharnullableschema_indexSuggested position this schema should take in a sorted list of schemas from this data center.intnullabletap_schema.keysForeign key relationships between tables available for ADQL querying.key_idUnique key identifiercharindexedprimaryfrom_tableFully qualified table namecharnullabletarget_tableFully qualified table namecharnullabledescriptionDescription of this keyunicodeCharnullableutypeUtype of this keycharnullablesourcerdId of the originating rd (local information)charnullabletap_schema.tablesfrom_tabletable_nametap_schema.tablestarget_tabletable_nametap_schema.key_columnsColumns participating in foreign key relationships between tables available for ADQL querying.key_idKey identifier from TAP_SCHEMA.keyscharnullablefrom_columnKey column name in the from tablecharnullabletarget_columnKey column in the target tablecharnullablesourcerdId of the originating rd (local information)charnullabletap_schema.keyskey_idkey_idtap_schema.groupsColumns that are part of groups within tables available for ADQL querying.table_nameFully qualified table namecharnullablecolumn_nameName of a column belonging to the groupcharnullablecolumn_utypeutype the column within the groupcharnullablegroup_nameName of the groupcharnullablegroup_utypeutype of the groupcharnullablesourcerdId of the originating rd (local information)charnullabletap_schema.tablestable_nametable_namerob_spoca_ch *** SPoCA Coronal Hole *** This service provides a catalog of Coronal Holes obtained with the Spatial Possibilitistic Clustering Algorithm (SPoCA). Level 2 AIA 19.3nm images (calibrated and corrected for degradation) are used, at a cadence of one AIA image every 6 hours. Only coronal holes older than three days are being reported. Bounding box and characteristics such as areas and pixel intensity statistics, on AIA 19.3nm and HMI magnetogram images are provided.rob_spoca_ch.epn_coreSPoCA coronal holesivo://ivoa.net/std/epntap#table-2.0granule_uidInternal table row index, which must be unique within the table. Can be alphanumeric.meta.idcharindexedprimarygranule_gidCommon to granules of same type (e.g. same map projection, or geometry data products). Can be alphanumeric.meta.idcharobs_idAssociates granules derived from the same data (e.g. various representations/processing levels). Can be alphanumeric, may be the ID of original observation.meta.id;obschardataproduct_typeThe high-level organization of the data product, from a controlled vocabulary (e.g., 'im' for image, sp for spectrum). Multiple terms may be used, separated by # characters.meta.code.classcharnullabletarget_nameStandard IAU name of target (from a list related to target class), case sensitivemeta.id;srccharnullabletarget_classType of target, from a controlled vocabulary.src.classcharnullabletime_minAcquisition start time (in JD), as UTC at time_refpositiondtime.start;obsdoublenullabletime_maxAcquisition stop time (in JD), as UTC at time_refpositiondtime.end;obsdoublenullabletime_sampling_step_minSampling time for measurements of dynamical phenomena, lower limit.stime.resolution;stat.mindoublenullabletime_sampling_step_maxSampling time for measurements of dynamical phenomena, upper limitstime.resolution;stat.maxdoublenullabletime_exp_minIntegration time of the measurement, lower limit.stime.duration;obs.exposure;stat.mindoublenullabletime_exp_maxIntegration time of the measurement, upper limitstime.duration;obs.exposure;stat.maxdoublenullablespectral_range_minSpectral range (frequency), lower limit.Hzem.freq;stat.mindoublenullablespectral_range_maxSpectral range (frequency), upper limitHzem.freq;stat.maxdoublenullablespectral_sampling_step_minSpectral sampling step, lower limit.Hzem.freq;spect.binSize;stat.mindoublenullablespectral_sampling_step_maxSpectral sampling step, upper limitHzem.freq;spect.binSize;stat.maxdoublenullablespectral_resolution_minSpectral resolution, lower limit.spect.resolution;stat.mindoublenullablespectral_resolution_maxSpectral resolution, upper limitspect.resolution;stat.maxdoublenullablec1minRight Ascension (ICRS), lower limit.degpos.eq.ra;stat.mindoublenullablec1maxRight Ascension (ICRS), upper limitdegpos.eq.ra;stat.maxdoublenullablec2minDeclination (ICRS), lower limit.degpos.eq.dec;stat.mindoublenullablec2maxDeclination (ICRS), upper limitdegpos.eq.dec;stat.maxdoublenullablec3minDistance from coordinate origin, lower limit.AUpos.distance;stat.mindoublenullablec3maxDistance from coordinate origin, upper limitAUpos.distance;stat.maxdoublenullables_regionObsCore-like footprint, valid for celestial, spherical, or body-fixed framespos.outline;obs.fieldcharnullablec1_resol_minResolution in the first coordinate, lower limit.degpos.angResolution;stat.mindoublenullablec1_resol_maxResolution in the first coordinate, upper limitdegpos.angResolution;stat.maxdoublenullablec2_resol_minResolution in the second coordinate, lower limit.degpos.angResolution;stat.mindoublenullablec2_resol_maxResolution in the second coordinate, upper limitdegpos.angResolution;stat.maxdoublenullablec3_resol_minResolution in the third coordinate, lower limit.AUpos.resolution;stat.mindoublenullablec3_resol_maxResolution in the third coordinate, upper limitAUpos.resolution;stat.maxdoublenullablespatial_frame_typeFlavor of coordinate system, defines the nature of coordinates. From a controlled vocabulary, where 'none' means undefined.meta.code.class;pos.framecharnullableincidence_minIncidence angle (solar zenithal angle) during data acquisition, lower limit.degpos.incidenceAng;stat.mindoublenullableincidence_maxIncidence angle (solar zenithal angle) during data acquisition, upper limitdegpos.incidenceAng;stat.maxdoublenullableemergence_minEmergence angle during data acquisition, lower limit.degpos.emergenceAng;stat.mindoublenullableemergence_maxEmergence angle during data acquisition, upper limitdegpos.emergenceAng;stat.maxdoublenullablephase_minPhase angle during data acquisition, lower limit.degpos.phaseAng;stat.mindoublenullablephase_maxPhase angle during data acquisition, upper limitdegpos.phaseAng;stat.maxdoublenullableinstrument_host_nameStandard name of the observatory or spacecraftmeta.id;instr.obstycharnullableinstrument_nameStandard name of instrumentmeta.id;instrcharnullablemeasurement_typeUCD(s) defining the data, with multiple entries separated by hash (#) characters.meta.ucdcharnullableprocessing_levelDataset-related encoding, or simplified CODMAC calibration levelmeta.calibLevelintcreation_dateDate of first entry of this granuletime.creationcharnullablemodification_dateDate of last modification (used to handle mirroring)time.processingcharnullablerelease_dateStart of public access periodtime.releasecharnullableservice_titleTitle of resource (an acronym really, will be used to handle multiservice results)meta.titlecharnullabledatalink_urlLink to a datalink document for this datasetmeta.ref.urlcharnullablesubobserver_longitude_minMinimum sub-observer point longitude (sub-Earth for ground based observations)degpos.bodyrc.lon;stat.mindoublenullablesubobserver_longitude_maxMaximum sub-observer point longitude (sub-Earth for ground based observations)degpos.bodyrc.lon;stat.maxdoublenullablesubobserver_latitude_minMinimum sub-observer point latitude (sub-Earth for ground based observations)degpos.bodyrc.lat;stat.mindoublenullablesubobserver_latitude_maxMaximum sub-observer point latitude (sub-Earth for ground based observations)degpos.bodyrc.lat;stat.maxdoublenullableaccess_urlURL of the data file, case sensitive. If present, then access_format and access_estsize are mandatory.meta.ref.url;meta.filecharnullableaccess_formatFile format type (RFC 6838 Media Type a.k.a. MIME type)meta.code.mimecharnullableaccess_estsizeEstimated file size in kbyte.kbytephys.size;meta.fileintnullableprocessing_level_descDescribes specificities of the processing levelmeta.notecharnullablefeature_nameSecondary name (can be standard name of region of interest)meta.id;src;obs.fieldcharnullablepublisherA short string identifying the entity running the data service usedmeta.curationcharnullablespatial_coordinate_descriptionID of specific coordinate system and version or properties.meta.code.class;pos.framecharnullablespatial_originDefines the frame originmeta.ref;pos.framecharnullabletarget_distance_minMin observer-target distancekmpos.distance;stat.mindoublenullabletarget_distance_maxMax observer-target distancekmpos.distance;stat.maxdoublenullabletarget_regionType of region or feature of interestmeta.id;src;obs.fieldcharnullablethumbnail_urlURL of a thumbnail image with predefined size (png ~200 pix, for use in a client only)meta.ref.url;meta.previewcharnullabletime_scaleDefaults to UTC in data services; takes values from http://www.ivoa.net/rdf/time_scale otherwisetime.scalecharnullablech_c1_centroidHelioprojective longitude of the centroid of the coronal holedegpos.eq.ra;pos.centroiddoublenullablech_c2_centroidHelioprojective loatitude of the centroid of the coronal holedegpos.eq.dec;pos.centroiddoublenullablech_area_projectedArea of the coronal hole as seen by the observerarcsec**2phys.areadoublenullablech_area_projected_errorUncertainety of the area of the coronal hole as seen by the observerarcsec**2stat.error;phys.areadoublenullablech_area_deprojectedEstimation of the area of the coronal hole on the solar photospherekm**2phys.areadoublenullablech_area_deprojected_errorUncertainety of the estimation of the area of the coronal hole on the solar photospherekm**2stat.error;phys.areadoublenullablech_area_pixelsNumber of pixels of the coronal hole in the mappixphys.area;instr.pixelintnullablech_stat_aia_imageImage onto which the coronal hole statistics are computedmeta.id;obs.imagecharnullablech_stat_aia_sample_sizeNumber of pixels of the cornal hole used to compute the statistics, the statistics are computed up to 0.95 solar radiuspixmeta.number;instr.pixelintch_stat_aia_maxMaximum of pixels values of the coronal holecount.s**-1phot.count;stat.maxdoublenullablech_stat_aia_minMinimum of pixels values of the coronal holecount.s**-1phot.count;stat.mindoublenullablech_stat_aia_medianMedian of pixels values of the coronal holecount.s**-1phot.count;stat.mediandoublenullablech_stat_aia_meanMean of pixels values of the coronal holecount.s**-1phot.count;stat.meandoublenullablech_stat_aia_varianceVariance of pixels values of the coronal holecount**2.s**-2stat.variance;phot.countdoublenullablech_stat_aia_skewnessSkewness of pixels values of the coronal holestat.skewness;phot.countdoublenullablech_stat_aia_kurtosisKurtosis of pixels values of the coronal holestat.kurtosis;phot.countdoublenullablech_stat_aia_first_quartileFirst quartile of pixels values of the coronal holecount.s**-1stat.rank;phot.countdoublenullablech_stat_aia_third_quartileThird quartile of pixels values of the coronal holecount.sstat.rank;phot.countdoublenullablech_stat_hmi_imageImage onto which the coronal hole statistics are computedmeta.id;obs.imageunicodeCharnullablech_stat_hmi_sample_sizeNumber of pixels of the coronal hole used to compute the statistics, the statistics are computed up to 0.95 solar radiuspixmeta.number;instr.pixelintnullablech_stat_hmi_maxMaximum of the magnetic field of the coronal holeGphys.magField;stat.maxdoublenullablech_stat_hmi_minMinimum of the magnetic field of the coronal holeGphys.magField;stat.mindoublenullablech_stat_hmi_medianMedian of the magnetic field of the coronal holeGphys.magField;stat.mediandoublenullablech_stat_hmi_meanMean of the magnetic field of the coronal holeGphys.magField;stat.meandoublenullablech_stat_hmi_varianceVariance of the magnetic field of the coronal holeG**2stat.variance;phys.magFielddoublenullablech_stat_hmi_skewnessSkewness of the magnetic field of the coronal holestat.skewness;phys.magFielddoublenullablech_stat_hmi_kurtosisKurtosis of the magnetic field of the coronal holestat.kurtosis;phys.magFielddoublenullablech_stat_hmi_first_quartileFirst quartile of the magnetic field of the coronal holeGstat.rank;phys.magFielddoublenullablech_stat_hmi_third_quartileThird quartile of the magnetic field of the coronal holeGstat.rank;phys.magFielddoublenullablerob_spoca_ch.trackingSPoCA coronal holes trackingpreviousThe granule_uid of the detectionmeta.idcharindexedprimary"next"The granule_uid of the detectionmeta.idcharindexedprimaryoverlap_area_projectedSize of the overlap between the 2 detectionsarcsec**2phys.areadoublenullableoverlap_area_pixelsSize of the overlap between the 2 detectionspixphys.area;instr.pixeldoublenullablerob_spoca_ch.datalinkSPoCA coronal holes datalinkgranule_uidThe granule_uid of the detectionmeta.idcharindexedprimarythumbnail_urlURL of a thumbnail imagemeta.ref.urlcharnullablech_stat_aia_image_urlURL of the AIA image onto which the coronal hole statistics are computedmeta.ref.urlcharnullablech_stat_hmi_image_urlURL of the HMI image onto which the coronal hole statistics are computedmeta.ref.urlcharnullableprovenance_urlURL of the provenance file for the coronal hole mapmeta.ref.urlcharnullableuset_caII Uccle Solar Equatorial Table (USET) Calcium II-K observations. Full disk solar images taken at the Royal Observatory of Belgium.uset_caii.epn_core Uccle Solar Equatorial Table (USET) Calcium II-K observations. Full disk solar images taken at the Royal Observatory of Belgium.ivo://ivoa.net/std/epntap#table-2.0granule_uidThe id of the file in the format uset_caIIk_YYYYMMDD_hhmmssmeta.idchargranule_gidEqual to granule_uidmeta.idcharobs_idFILENAME without extensionmeta.id;obschardataproduct_typemeta.code.classchartarget_nameStandar IAU name of target, case sensitive. Must match target_class.meta.id;srcchartarget_classClass of the target of the observation.src.classchartime_minStart time (in JD) of the observation. UTC measured at time_origin location (default is observer's frame).dtime.start;obsdoubletime_maxEnd time (in JD) of the observation. Use here start time plus exposure. UTC measured at time_origin location (default is observer's frame).dtime.end;obsdoubletime_sampling_step_minMin time sampling step.stime.resolution;stat.mindoublenullabletime_sampling_step_maxMax time sampling step.stime.resolution;stat.maxdoublenullabletime_exp_minMinimum integration time. Convert to s.stime.duration;obs.exposure;stat.maxdoubletime_exp_maxMaximum integration time. Convert to s.stime.duration;obs.exposure;stat.mindoublespectral_range_minMin spectral range (as frequency, convert to Hz). Calculated from maximum wavelength: c*10^14/wavemax.Hzem.freq;stat.mindoublespectral_range_maxMax spectral range (as frequency, convert to Hz). Calculated from minimum wavelength: c*10^14/wavemin.Hzem.freq;stat.maxdoublespectral_sampling_step_minMin spectral sampling step.Hzem.freq;spect.binSize;stat.mindoublenullablespectral_sampling_step_maxMax spectral sampling step.Hzem.freq;spect.binSize;stat.maxdoublenullablespectral_resolution_minMinimum spectral resolution (resolving power). Calculated from wavelength: wavemin/max(delta lambda). Convert to Hz.spect.resolution;stat.mindoublenullablespectral_resolution_maxMaximum spectral resolution (resolving power). Calculated from wavelength: wavemax/min(delta lambda). Convert to Hz.spect.resolution;stat.maxdoublenullablec1minMinimum of the first coordinate (depends on the frame).pos.eq.ra;stat.mindoublenullablec1maxMaximum of the first coordinate (depends on the frame).pos.eq.ra;stat.maxdoublenullablec2minMinimum of the second coordinate (depends on the frame).pos.eq.dec;stat.mindoublenullablec2maxMaximum of the second coordinate (depends on the frame).pos.eq.dec;stat.maxdoublenullablec3minMinimum of the third coordinate.pos.distance;stat.mindoublenullablec3maxMaximum of the third coordinate.pos.distance;stat.maxdoublenullables_regionObsCore-like footprint in 2D (if spatial_frame_type = celestial or body).pos.outline;obs.fieldcharc1_resol_minMinimum resolution in the first coordinate.arcsecpos.angResolution;stat.mindoublec1_resol_maxMaximum resolution in the first coordinate.arcsecpos.angResolution;stat.maxdoublec2_resol_minMinimum resolution in the second coordinate.arcsecpos.angResolution;stat.mindoublec2_resol_maxMaximum resolution in the second coordinate.arcsecpos.angResolution;stat.maxdoublec3_resol_minMinimum resolution in the third coordinate.arcsecpos.angResolution;stat.mindoublenullablec3_resol_maxMaximum resolution in the third coordinate.arcsecpos.angResolution;stat.maxdoublenullablespatial_frame_typeFlavor of coordinate system, defines the nature of coordinates. From enumerated list. Use 'none' if undefined.meta.code.class;pos.framecharincidence_minMin incidence angle (solar zenithal angle)degpos.incidenceAng;stat.mindoublenullableincidence_maxMax incidence angle (solar zenithal angle)degpos.incidenceAng;stat.maxdoublenullableemergence_minMin emergence angledegpos.emergenceAng;stat.mindoublenullableemergence_maxMax emergence angledegpos.emergenceAng;stat.maxdoublenullablephase_minMin phase angledegpos.phaseAng;stat.mindoublenullablephase_maxMax phase angledegpos.phaseAng;stat.maxdoublenullableinstrument_host_nameStandard name of the observatory or spacecraft.meta.id;instr.obstycharinstrument_nameStandard name of instrument.meta.id;instrcharmeasurement_typeUCDs defining the data.meta.ucdcharprocessing_levelLEVEL=1 for calibrated data in FITS headermeta.calibLevelintcreation_dateDate of first entry of this granule.dtime.creationdoublemodification_dateDate of last modification.time.processingcharnullablerelease_dateStart of public access period (set to creation_date if no proprietary period).time.releasecharnullableservice_titleTitle of resource = schema name.meta.titlecharbitpixArray data typemetaintnullablenaxisNymber of array dimensionsintnullablenaxis1Number of pixels along axis 1meta.number;instr.pixelintnullablenaxis2Number of pixels along axis 2meta.number;instr.pixelintnullablesolarnetFully SOLARNET-compliant=1.0, partially=0.5metaintnullableobs_hduThis HDY contains observational datametaintnullableobsgeo_xECEF X coordinate of the observermpos.cartesian.x;obs.observer;posdoublenullableobsgeo_yECEF Y coordinate of the observermpos.cartesian.y;obs.observer;posdoublenullableobsgeo_zECEF Z coordinate of the observermpos.cartesian.z;obs.observer;posdoublenullablecameraModel of the camerameta.id;instrcharnullablewaveunitPower of 10 by which the metre is multipliedstat.valuedoublenullableobs_modePredefined settings used during obsinstr.setup;obs.calib;phot.calib;obscharnullablebtype['type of data, Unified Content Descriptor']charnullablebunitUnit of physical valuemeta.unit;stat.value;physcharnullablebscaleTo be multiplied to the data array valuesstat.valuedoublenullablebzeroTo be added by the data array valuesstat.valuedoublenullablephysparaPhysical parameter represented in the dataobs.param;instr.param;phys;charnullablectype1Helioproj. westward angle, TAN projectioncharnullablectype2Helioproj. northward angle, TAN projectioncharnullablecunit1Units along axis 1meta.unitcharnullablecunit2Units along axis 2meta.unitcharnullablepc1_1WCS coordinate transformation matrix element 1_1doublenullablepc1_2WCS coordinate transformation matrix element 1_2doublenullablepc2_1WCS coordinate transformation matrix element 2_1doublenullablepc2_2WCS coordinate transformation matrix element 2_2doublenullablecrotaRotation angledegdoublenullablesolar_rEstimated radius of the Sunpixelphys.size.radius;pos.heliocentricdoublenullabler_errorError on the estimated radiuspixelstat.error;phys.size.radius;pos.heliocentricdoublenullablecrval1Value of reference pixel along axis 1arcsecmeta.ref;instr.pixel;stat.valuedoublenullablecrval2Value of reference pixel along axis 2pixelmeta.ref;instr.pixel;stat.valuedoublenullablecrpix1Reference pixel location along axis 1pixelmeta.ref;instr.pixeldoublenullablecrpix2Reference pixel location along axis 2pixelmeta.ref;instr.pixeldoublenullablecreatorName of software that produced the FITSmeta.id;meta.softwarecharnullablevers_swVersion of software appliedmeta.version;meta.softwareintnullablecontactContact person at the institutionmeta.idcharnullablesolar_b0Tilt of the solar North Poledegdoublenullablesolar_p0Celestial North to solar North angledegdoublenullabledoiDigital Object Identifiermeta.ref.doicharnullablechecksumHDU checksummeta.checksumcharnullabledatasumdata unit checksummeta.unit;meta.checksumlongnullableuset_sunspot_drawing *** USET sunspot drawing *** The Uccle Solar Equatorial Table (USET) facility at the Royal Observatory of Belgium has gathered an uninterrupted series of sunspot drawings since year 1941. This collection continues to be updated when weather permits. This table provides information about these drawings.uset_sunspot_drawing.epn_core *** USET sunspot drawing *** The Uccle Solar Equatorial Table (USET) facility at the Royal Observatory of Belgium has gathered an uninterrupted series of sunspot drawings since year 1941. This collection continues to be updated when weather permits. This table provides information about these drawings.ivo://ivoa.net/std/epntap#table-2.0granule_uidInternal table row index, which must be unique within the table. Can be alphanumeric.meta.idcharindexedprimarygranule_gidCommon to granules of same type (e.g. same map projection, or geometry data products). Can be alphanumeric.meta.idcharobs_idAssociates granules derived from the same data (e.g. various representations/processing levels). Can be alphanumeric, may be the ID of original observation.meta.id;obschardataproduct_typeThe high-level organization of the data product, from a controlled vocabulary (e.g., 'im' for image, sp for spectrum). Multiple terms may be used, separated by # characters.meta.code.classcharnullabletarget_nameStandard IAU name of target (from a list related to target class), case sensitivemeta.id;srccharnullabletarget_classType of target, from a controlled vocabulary.src.classcharnullabletime_minAcquisition start time (in JD), as UTC at time_refpositiondtime.start;obsdoublenullabletime_maxAcquisition stop time (in JD), as UTC at time_refpositiondtime.end;obsdoublenullabletime_sampling_step_minSampling time for measurements of dynamical phenomena, lower limit.stime.resolution;stat.mindoublenullabletime_sampling_step_maxSampling time for measurements of dynamical phenomena, upper limitstime.resolution;stat.maxdoublenullabletime_exp_minIntegration time of the measurement, lower limit.stime.duration;obs.exposure;stat.mindoublenullabletime_exp_maxIntegration time of the measurement, upper limitstime.duration;obs.exposure;stat.maxdoublenullablespectral_range_minSpectral range (frequency), lower limit.Hzem.freq;stat.mindoublenullablespectral_range_maxSpectral range (frequency), upper limitHzem.freq;stat.maxdoublenullablespectral_sampling_step_minSpectral sampling step, lower limit.Hzem.freq;spect.binSize;stat.mindoublenullablespectral_sampling_step_maxSpectral sampling step, upper limitHzem.freq;spect.binSize;stat.maxdoublenullablespectral_resolution_minSpectral resolution, lower limit.spect.resolution;stat.mindoublenullablespectral_resolution_maxSpectral resolution, upper limitspect.resolution;stat.maxdoublenullablec1min(This data collection does not give coordinates)doublenullablec1max(This data collection does not give coordinates)doublenullablec2min(This data collection does not give coordinates)doublenullablec2max(This data collection does not give coordinates)doublenullablec3min(This data collection does not give coordinates)doublenullablec3max(This data collection does not give coordinates)doublenullables_regionObsCore-like footprint, valid for celestial, spherical, or body-fixed framespos.outline;obs.fieldcharnullablec1_resol_min(This data collection does not give coordinates)doublenullablec1_resol_max(This data collection does not give coordinates)doublenullablec2_resol_min(This data collection does not give coordinates)doublenullablec2_resol_max(This data collection does not give coordinates)doublenullablec3_resol_min(This data collection does not give coordinates)doublenullablec3_resol_max(This data collection does not give coordinates)doublenullablespatial_frame_typeFlavor of coordinate system, defines the nature of coordinates. From a controlled vocabulary, where 'none' means undefined.meta.code.class;pos.framecharnullableincidence_minIncidence angle (solar zenithal angle) during data acquisition, lower limit.degpos.incidenceAng;stat.mindoublenullableincidence_maxIncidence angle (solar zenithal angle) during data acquisition, upper limitdegpos.incidenceAng;stat.maxdoublenullableemergence_minEmergence angle during data acquisition, lower limit.degpos.emergenceAng;stat.mindoublenullableemergence_maxEmergence angle during data acquisition, upper limitdegpos.emergenceAng;stat.maxdoublenullablephase_minPhase angle during data acquisition, lower limit.degpos.phaseAng;stat.mindoublenullablephase_maxPhase angle during data acquisition, upper limitdegpos.phaseAng;stat.maxdoublenullableinstrument_host_nameStandard name of the observatory or spacecraftmeta.id;instr.obstycharnullableinstrument_nameStandard name of instrumentmeta.id;instrcharnullablemeasurement_typeUCD(s) defining the data, with multiple entries separated by hash (#) characters.meta.ucdcharnullableprocessing_levelDataset-related encoding, or simplified CODMAC calibration levelmeta.calibLevelintcreation_dateDate of first entry of this granuletime.creationcharnullablemodification_dateDate of last modification (used to handle mirroring)time.processingcharnullablerelease_dateStart of public access periodtime.releasecharnullableservice_titleTitle of resource (an acronym really, will be used to handle multiservice results)meta.titlecharnullableaccess_urlURL of the data file, case sensitive. If present, then access_format and access_estsize are mandatory.meta.ref.url;meta.filecharnullableaccess_formatFile format type (RFC 6838 Media Type a.k.a. MIME type)meta.code.mimecharnullableaccess_estsizeEstimated file size in kbyte.kbytephys.size;meta.fileintnullableobserver_nameObserver namemeta.id.PI;obs.observercharnullableoperatorThe last person that analyzed the drawingmeta.codecharnullablewolf_numberThe Wolf numbermeta.numbercharnullablequalityMeteorological condition of observation: 0 no observation possible, 1 very cloudy, 2, partially cloudy, 3: fair conditions, 4: good conditions, 5: exceptionally good conditionsmeta.code.qualcharnullablecarrington_rotationThe number of Carrington rotationmeta.numberintanalyzedStatus of the analysis, set to 1 if all position, spots number, Zurich and McIntosh types filledmeta.code.statusintgroup_countThe number of sunspot groups; interactively definedmeta.numberintspot_countTotal number of spotsmeta.numberintangle_pPosition angle between the geocentric North Pole and the solar rotational North Pole measured eastward from geocentric northpos.posAngdoublenullableangle_bHeliographic latitude of the central point of the solar diskpos.bodyrc.latdoublenullableangle_lHeliographic longitude of the central point of the solar diskpos.bodyrc.londoublenullableall_area_doneFlag to indicate if all areas have been processedmeta.code.statusintuset_sunspot_drawing.epn_linksUSET links drawings and sunspotsuidUnique identifiercharindexedprimarymodification_dateModification datecharnullabledrawing_refReference to a sunspot drawing in uset_sunspot_drawing.epn_corecharindexednullablegroup_refReference to a sunspot group in uset_sunspot_group.epn_corecharindexednullableuset_sunspot_drawing.epn_coredrawing_refgranule_uiduset_sunspot_group.epn_coregroup_refgranule_uiduset_sunspot_group *** USET Groups *** Values in the USET sunspot group catalog are derived from the solar drawings obtained by the Uccle Solar Equatorial Table (USET) facility that is located at the Royal Observatory of Belgium. The USET sunspot group catalog covers 82 years of observations in 2021, and is updated every day. A home-made software (DigiSun) written in Python is used to derive quantities such as location and areas from the sunspot drawings.uset_sunspot_group.epn_core *** USET Groups *** Values in the USET sunspot group catalog are derived from the solar drawings obtained by the Uccle Solar Equatorial Table (USET) facility that is located at the Royal Observatory of Belgium. The USET sunspot group catalog covers 82 years of observations in 2021, and is updated every day. A home-made software (DigiSun) written in Python is used to derive quantities such as location and areas from the sunspot drawings.ivo://ivoa.net/std/epntap#table-2.0granule_uidInternal table row index, which must be unique within the table. Can be alphanumeric.meta.idcharindexedprimarygranule_gidCommon to granules of same type (e.g. same map projection, or geometry data products). Can be alphanumeric.meta.idcharobs_idAssociates granules derived from the same data (e.g. various representations/processing levels). Can be alphanumeric, may be the ID of original observation.meta.id;obschardataproduct_typeThe high-level organization of the data product, from a controlled vocabulary (e.g., 'im' for image, sp for spectrum). Multiple terms may be used, separated by # characters.meta.code.classcharnullabletarget_nameStandard IAU name of target (from a list related to target class), case sensitivemeta.id;srccharnullabletarget_classType of target, from a controlled vocabulary.src.classcharnullabletime_minAcquisition start time (in JD), as UTC at time_refpositiondtime.start;obsdoublenullabletime_maxAcquisition stop time (in JD), as UTC at time_refpositiondtime.end;obsdoublenullabletime_sampling_step_minSampling time for measurements of dynamical phenomena, lower limit.stime.resolution;stat.mindoublenullabletime_sampling_step_maxSampling time for measurements of dynamical phenomena, upper limitstime.resolution;stat.maxdoublenullabletime_exp_minIntegration time of the measurement, lower limit.stime.duration;obs.exposure;stat.mindoublenullabletime_exp_maxIntegration time of the measurement, upper limitstime.duration;obs.exposure;stat.maxdoublenullablespectral_range_minSpectral range (frequency), lower limit.Hzem.freq;stat.mindoublenullablespectral_range_maxSpectral range (frequency), upper limitHzem.freq;stat.maxdoublenullablespectral_sampling_step_minSpectral sampling step, lower limit.Hzem.freq;spect.binSize;stat.mindoublenullablespectral_sampling_step_maxSpectral sampling step, upper limitHzem.freq;spect.binSize;stat.maxdoublenullablespectral_resolution_minSpectral resolution, lower limit.spect.resolution;stat.mindoublenullablespectral_resolution_maxSpectral resolution, upper limitspect.resolution;stat.maxdoublenullablec1min(This data collection does not give coordinates)doublenullablec1max(This data collection does not give coordinates)doublenullablec2min(This data collection does not give coordinates)doublenullablec2max(This data collection does not give coordinates)doublenullablec3min(This data collection does not give coordinates)doublenullablec3max(This data collection does not give coordinates)doublenullables_regionObsCore-like footprint, valid for celestial, spherical, or body-fixed framespos.outline;obs.fieldcharnullablec1_resol_min(This data collection does not give coordinates)doublenullablec1_resol_max(This data collection does not give coordinates)doublenullablec2_resol_min(This data collection does not give coordinates)doublenullablec2_resol_max(This data collection does not give coordinates)doublenullablec3_resol_min(This data collection does not give coordinates)doublenullablec3_resol_max(This data collection does not give coordinates)doublenullablespatial_frame_typeFlavor of coordinate system, defines the nature of coordinates. From a controlled vocabulary, where 'none' means undefined.meta.code.class;pos.framecharnullableincidence_minIncidence angle (solar zenithal angle) during data acquisition, lower limit.degpos.incidenceAng;stat.mindoublenullableincidence_maxIncidence angle (solar zenithal angle) during data acquisition, upper limitdegpos.incidenceAng;stat.maxdoublenullableemergence_minEmergence angle during data acquisition, lower limit.degpos.emergenceAng;stat.mindoublenullableemergence_maxEmergence angle during data acquisition, upper limitdegpos.emergenceAng;stat.maxdoublenullablephase_minPhase angle during data acquisition, lower limit.degpos.phaseAng;stat.mindoublenullablephase_maxPhase angle during data acquisition, upper limitdegpos.phaseAng;stat.maxdoublenullableinstrument_host_nameStandard name of the observatory or spacecraftmeta.id;instr.obstycharnullableinstrument_nameStandard name of instrumentmeta.id;instrcharnullablemeasurement_typeUCD(s) defining the data, with multiple entries separated by hash (#) characters.meta.ucdcharnullableprocessing_levelDataset-related encoding, or simplified CODMAC calibration levelmeta.calibLevelintcreation_dateDate of first entry of this granuletime.creationcharnullablemodification_dateDate of last modification (used to handle mirroring)time.processingcharnullablerelease_dateStart of public access periodtime.releasecharnullableservice_titleTitle of resource (an acronym really, will be used to handle multiservice results)meta.titlecharnullableaccess_urlURL of the data file, case sensitive. If present, then access_format and access_estsize are mandatory.meta.ref.url;meta.filecharnullableaccess_formatFile format type (RFC 6838 Media Type a.k.a. MIME type)meta.code.mimecharnullableaccess_estsizeEstimated file size in kbyte.kbytephys.size;meta.fileintnullableoperatorThe last person that analyzed the drawingmeta.codecharnullablewolf_numberThe Wolf numbermeta.numbercharnullablequalityMeteorological condition of observation: 0 no observation possible, 1 very cloudy, 2, partially cloudy, 3: fair conditions, 4: good conditions, 5: exceptionally good conditions.meta.code.qualcharnullablefeat_hg_latHeliographic latitude of center of grouppos.wcs;pos.barycenterdoublenullablefeat_hg_lonHeliographic longitude of center of grouppos.wcs;pos.barycenterdoublenullablefeat_pixel_xX-image coordinate of center of group in pixelpos.wcs;pos.barycenter;pos.cartesian.xdoublenullablefeat_pixel_yY-image coordinate of center of group in pixelpos.wcs;pos.barycenter;pos.cartesian.ydoublenullableangular_dist_meridAngular distance in longitude from the central meridian in degreemeta.numberdoublenullableangular_dist_centerangular distance from the center in degreemeta.numberdoublenullablequadrantQuadrant of group in solar disc 1=NE, 2:SE, 3=SW, 4=NWmeta.numbercharmcintosh_clsMcIntosh classmeta.code.classcharnullablezurich_clsZurich classmeta.code.classcharnullablenum_spotsnumber of spotsmeta.numberintdipole1_hg_latHeliographic latitude of the first part of the dipoledegpos.wcsdoublenullabledipole1_hg_lonHeliographic longitude of the first part of the dipoledegpos.wcsdoublenullabledipole2_hg_latHeliographic latitude of the second part of the dipoledegpos.wcsdoublenullabledipole2_hg_lonHeliographic longitude of the second part of the dipoledegpos.wcsdoublenullabledipole1_pixel_xX-image coordinate of first part of the dipole in pixelpos.wcsdoublenullabledipole1_pixel_yY-image coordinate of first part of the dipole in pixelpos.wcsdoublenullabledipole2_pixel_xX-image coordinate of second part of the dipole in pixelpos.wcsdoublenullabledipole2_pixel_yY-image coordinate of second part of the dipole in pixelpos.wcsdoublenullablespot_area_deproj_mshGroup deprojected area in millionths of solar hemispherephys.areadoublenullablespot_area_raw_pxGroup area in number of pixelsphys.areadoublenullablespot_area_proj_mshGroup projected area in millionths of solar hemispherephys.areadoublenullablegspotRelative importance of the leading spot and density of the sunspot population (USSPS codes)obs.paramintlargest_spotName of the largest spot (varchar(1)): L (leading), T (trailing), or E (equal)meta.code.classcharnullable