nasa cdf (version 3) {
// global attributes:
		:Project = "THEMIS" ;
		:Source_name = "THG_L2>THEMIS Ground Based Observatory" ;
		:Data_type = "MAG" ;
		:Data_version = "1" ;
		:Logical_source = "thg_l2_mag_bou" ;
		:Logical_file_id = "thg_l2_mag_bou_20260528_v01" ;
		:Time_resolution = "1.0 s" ;
		:Generated_by = "THEMIS SOC" ;
		:Generation_date = "Thu Jun  4 23:00:20 2026" ;
		:ADID_ref = "NSSD0110" ;
		:File_naming_convention = "source_datatype_descriptor" ;
		:Software_version = "xxxx" ;
		:TEXT = "Part of the USGS magnetometer network." ;
		:Spase_datasetresourceid = "spase://NASA/NumericalData/THEMIS/Ground/Boulder/Magnetometer/PT1S" ;
		:Doi = "10.48322/ad0r-pm72" ;
		:LINK_TEXT = "United States Geological Survey (USGS) Geomagnetism Program information can be found at" ;
		:LINK_TEXT = "USGS Geomagnetism Program data can be accessed at the" ;
		:LINK_TEXT = "Further information about the Time History of Events and Macroscale Interactions During Substorms (THEMIS) mission can be found at the" ;
		:LINK_TEXT = "Information about the Fluxgate Magnetometers (GMAGS) can be found at the" ;
		:LINK_TEXT = "Site-specific data is archived at the" ;
		:HTTP_LINK = "https://www.usgs.gov/programs/geomagnetism/" ;
		:HTTP_LINK = "https://www.usgs.gov/programs/geomagnetism/data" ;
		:HTTP_LINK = "https://themis.ssl.berkeley.edu/index.shtml" ;
		:HTTP_LINK = "https://themis.ssl.berkeley.edu/instrument_gmags.shtml" ;
		:HTTP_LINK = "https://themis.ssl.berkeley.edu/data/themis/thg/l2/mag/bou/" ;
		:Mission_group = "THEMIS" ;
		:Instrument_type = "Ground-Based Magnetometers, Riometers, Sounders" ;
		:Acknowledgement = "Original data provided by the USGS Geomagnetism Program." ;
		:Descriptor = "BOU>Boulder, Colorado" ;
		:LINK_TITLE = "USGS Geomagnetism home page" ;
		:LINK_TITLE = "USGS Geomagnetism Program data page" ;
		:LINK_TITLE = "THEMIS home page" ;
		:LINK_TITLE = "THEMIS GMAG instrument information page" ;
		:LINK_TITLE = "THEMIS ftp site" ;
		:Logical_source_description = "Lower latitude chain (Lat 40.1, Long 254.8), Ground-based Vector Magnetic Field at Boulder, Colorado, 1 sec, USGS Network" ;
		:MODS = "Rev-2012-08-24 (crussell): CDF template created." ;
		:MODS = "Rev-2012-12-05 (crussell): Updated 'Rules of Use'." ;
		:MODS = "Rev-2013-11-04 (crussell): Changed longitude values from W to E" ;
		:MODS = "Rev-2025-11-05 (dcar): Corrected field component labels to HEZ (originally labelled HDZ) and MODS revision history. Updated HTTP links. Added COORDINATE_SYSTEM, spase_DatasetResourceID, and DOI attributes." ;
		:MODS = "Rev-2026-01-16 (dcar): Updated mission_group and instrument_type, fixed non-UTF-8 characters." ;
		:Discipline = "Space Physics>Magnetospheric Science" ;
		:Discipline = "Space Physics>Ionospheric Science" ;
		:PI_affiliation = "United States Geological Survey, 1711 Illinois St, Golden, CO 80401-1865, USA" ;
		:PI_name = "Carol A. Finn" ;
		:Rules_of_use = "Access to preliminary data is provided as-is. We request that you acknowledge the USGS Geomagnetism Program in all published documents which make use of USGS data." ;
// variable attributes, one line per entry (which variable each belongs to is not shown):
		CATDESC = "Magnetic field variation B in HEZ vector components" ;
		CATDESC = "thg_mag_bou_unit" ;
		CATDESC = "HDZ Component Number" ;
		CATDESC = "thg_mag_bou_time,.UTC, in seconds since 01-Jan-1970 00:00:00" ;
		CATDESC = "thg_mag_bou_Epoch" ;
		CATDESC = "EPOCH0 of THEMIS TIME BASE" ;
		CATDESC = "range_epoch" ;
		CATDESC = "thg_mag_bou_labl" ;
		DEPEND_0 = "thg_mag_bou_epoch" ;
		DEPEND_0 = "thg_mag_bou_epoch" ;
		DEPEND_1 = "thg_mag_bou_compno" ;
		DISPLAY_TYPE = "time_series" ;
		FIELDNAM = "B in HEZ Components" ;
		FIELDNAM = "thg_mag_bou_unit" ;
		FIELDNAM = "HDZ Component Number" ;
		FIELDNAM = "thg_mag_bou_time" ;
		FIELDNAM = "thg_mag_bou_Epoch" ;
		FIELDNAM = "thg_mag_bou_epoch0" ;
		FIELDNAM = "range_epoch" ;
		FIELDNAM = "thg_mag_bou_labl" ;
		FILLVAL = (6 numeric entries, not shown) ;
		FORMAT = "f9.2" ;
		FORMAT = "a2" ;
		FORMAT = "i2" ;
		FORMAT = "E13.6" ;
		FORMAT = "a21" ;
		LABL_PTR_1 = "thg_mag_bou_labl" ;
		LABL_PTR_1 = "thg_mag_bou_labl" ;
		UNIT_PTR = "thg_mag_bou_unit" ;
		VALIDMIN = (6 numeric entries, not shown) ;
		VALIDMAX = (6 numeric entries, not shown) ;
		VAR_TYPE = "data" ;
		VAR_TYPE = "metadata" ;
		VAR_TYPE = "support_data" ;
		VAR_TYPE = "support_data" ;
		VAR_TYPE = "support_data" ;
		VAR_TYPE = "support_data" ;
		VAR_TYPE = "support_data" ;
		VAR_TYPE = "metadata" ;
		SCALETYP = "linear" ;
		SCALETYP = "linear" ;
		DEPEND_TIME = "thg_mag_bou_time" ;
		DEPEND_EPOCH0 = "thg_mag_bou_epoch0" ;
		COORDINATE_SYSTEM = "HEZ" ;
		STATION_LATITUDE = "40.14" ;
		STATION_LONGITUDE = "254.76" ;
		STATION_ELEVATION = "1682.00" ;
		STATION_DECLINATION = "" ;
		DICT_KEY = "label" ;
		DICT_KEY = "number" ;
		DICT_KEY = "label" ;
		LABLAXIS = "UT" ;
		LABLAXIS = "UT" ;
		LABLAXIS = "timebase" ;
		LABLAXIS = "UT" ;
		UNITS = "sec" ;
		UNITS = "msec" ;
		UNITS = "msec" ;
		VAR_NOTES = "Unleaped seconds" ;
		VAR_NOTES = "EPOCH of 01-Jan-1970 00:00:00" ;
		VIRTUAL = "TRUE" ;
		FUNCT = "comp_themis_epoch" ;
		COMPONENT_0 = "thg_mag_bou_epoch0" ;
		COMPONENT_1 = "thg_mag_bou_time" ;
}