<_Note>Nodes prefixed with a _ are not valid SPASE, but are included for debugging. Values prefixed with a x_ are not valid SPASE but may considered for addition for completeness. 2.6.1 <_MasterURL>https://cdaweb.gsfc.nasa.gov/pub/software/cdawlib/0JSONS/thg_l2_mag_bou_00000000_v01.json (from all.xml) spase://NASA/NumericalData/THEMIS/Ground/Boulder/Magnetometer/PT1S <_ResourceID>Source: https://github.com/rweigel/cdawmeta-spase/blob/main/ResourceID.json Lower latitude chain (Lat 40.1, Long 254.8), Ground-based Vector Magnetic Field at Boulder, Colorado, 1 sec, USGS Network <_ResourceName>Source: Master/CDFglobalAttributes/Logical_source_description thg_l2_mag_bou <_AlternateName>Source: Master/CDFglobalAttributes/Logical_source Part of the USGS magnetometer network. <_Description>Source: Master/CDFglobalAttributes/TEXT Original data provided by the USGS Geomagnetism Program. <_Acknowledgement>Source: Master/CDFglobalAttributes/Acknowledgement <_Rights> SPDX Creative Commons Zero v1.0 Universal https://spdx.org/licenses/CC0-1.0.html https://spdx.org/licenses/ https://www.usgs.gov/programs/geomagnetism/ USGS Geomagnetism home page United States Geological Survey (USGS) Geomagnetism Program information can be found at <_Note>URL also in all.xml. Using master. https://www.usgs.gov/programs/geomagnetism/data USGS Geomagnetism Program data page USGS Geomagnetism Program data can be accessed at the <_Note>URL also in all.xml. Using master. https://themis.ssl.berkeley.edu/index.shtml THEMIS home page Further information about the Time History of Events and Macroscale Interactions During Substorms (THEMIS) mission can be found at the <_Note>URL also in all.xml. Using master. https://themis.ssl.berkeley.edu/instrument_gmags.shtml THEMIS GMAG instrument information page Information about the Fluxgate Magnetometers (GMAGS) can be found at the <_Note>URL also in all.xml. Using master. https://themis.ssl.berkeley.edu/data/themis/thg/l2/mag/bou/ THEMIS ftp site Site-specific data is archived at the <_Note>URL also in all.xml. Using master. United States Geological Survey Web Site https://www.usgs.gov/natural-hazards/geomagnetism Web site for access to magnetic field data <_Note>Source: InformationURL.json 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. <_Caveats>Source: Master/CDFglobalAttributes/Rules_of_use https://doi.org/10.48322/ad0r-pm72 <_DOI>Source: https://github.com/rweigel/cdawmeta-spase/blob/main/DOI.json <_AccessInformation>Source: https://github.com/rweigel/cdawmeta-spase/blob/main/AccessInformation.json 2007-01-01T00:00:00Z 2026-07-22T00:00:00Z <_TemporalDescription>Generated from all.xml/@timerange_start and all.xml/@timerange_stop <_ObservedRegion>Source: https://github.com/rweigel/cdawmeta-spase/blob/main/ObservedRegion.json <_ProcessingLevel>Processing level is not available in the master file; it should be there instead of, say, https://github.com/rweigel/cdawmeta-spase/blob/main/ProcessingLevel.json spase://SMWG/Instrument/Ground/Boulder/Magnetometer MagneticField spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/CDAWeb. Please also acknowledge the data producer: Carol A. Finn at United States Geological Survey, 1711 Illinois St, Golden, CO 80401-1865, USA HTTPS from SPDF https://cdaweb.gsfc.nasa.gov/pub/data/themis/thg/l2/mag/bou In CDF via HTTP from CDAWeb thg_l2_mag_bou_%Y%m%d_%Q.cdf %Y THG_L2_MAG_BOU CDF spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/CDAWeb. Please also acknowledge the data producer: Carol A. Finn at United States Geological Survey, 1711 Illinois St, Golden, CO 80401-1865, USA FTPS from SPDF ftps://cdaweb.gsfc.nasa.gov/pub/data/themis/thg/l2/mag/bou In CDF via HTTP from CDAWeb thg_l2_mag_bou_%Y%m%d_%Q.cdf %Y THG_L2_MAG_BOU CDF spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/CDAWeb. Please also acknowledge the data producer: Carol A. Finn at United States Geological Survey, 1711 Illinois St, Golden, CO 80401-1865, USA CDAWeb Web Service https://cdaweb.gsfc.nasa.gov/WebServices/ Instructions for using web services to access this dataset an other other metadata and options for CDAWeb datasets. The ProductKey here corresponds to the query parameter 'dataset' in the tables at the AccessURL in a dataset-related request can be made. THG_L2_MAG_BOU CDF CSV GIF NetCDF PNG PS PDF XML x_Script.IDL x_Script.Python Text.ASCII x_WAV spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/CDAWeb. Please also acknowledge the data producer: Carol A. Finn at United States Geological Survey, 1711 Illinois St, Golden, CO 80401-1865, USA CDAWeb Web Service user interface https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?index=sp_phys&dataset=THG_L2_MAG_BOU THG_L2_MAG_BOU Web service user interface for this product. CDF GIF PDF Text.ASCII x_WAV spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/CDAWeb. Please also acknowledge the data producer: Carol A. Finn at United States Geological Survey, 1711 Illinois St, Golden, CO 80401-1865, USA CDAWeb Python Script https://cdaweb.gsfc.nasa.gov/WS/cdasr/1/dataviews/sp_phys/datasets/THG_L2_MAG_BOU/clientLibraryExample/ THG_L2_MAG_BOU Web service that generates a Python script to access this product. x_Script.IDL x_Script.Python spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/SSCWeb. Please also acknowledge the data producer: Carol A. Finn at United States Geological Survey, 1711 Illinois St, Golden, CO 80401-1865, USA 4D Orbit Viewer https://sscweb.gsfc.nasa.gov/4dorbit/?sc=THG_L2_MAG_BOU THG_L2_MAG_BOU Web Service to this product. HTML spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/CDAWeb and the HAPI project. Please also acknowledge the data producer: Carol A. Finn at United States Geological Survey, 1711 Illinois St, Golden, CO 80401-1865, USA CDAWeb HAPI Server https://hapi-server.org/servers/#server=CDAWeb&dataset=THG_L2_MAG_BOU THG_L2_MAG_BOU Web Service to this product using the HAPI interface. CSV JSON Binary spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/CDAWeb and the HAPI project. Please also acknowledge the data producer: Carol A. Finn at United States Geological Survey, 1711 Illinois St, Golden, CO 80401-1865, USA CDAWeb HAPI Script in Multiple Languages https://hapi-server.org/servers/#server=CDAWeb&dataset=THG_L2_MAG_BOU&return=script THG_L2_MAG_BOU Web Service user interface that generates scripts in IDL, Javascript, MATLAB, Python, Autoplot, curl, wget to access this product. See https://hapi-server.org/servers/api for the API. x_Script.IDL x_Script.Javascript x_Script.MATLAB x_Script.Python x_Script.Autoplot x_Script.curl x_Script.wget spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/CDAWeb and the HAPI project. Please also acknowledge the data producer: Carol A. Finn at United States Geological Survey, 1711 Illinois St, Golden, CO 80401-1865, USA HAPI visualizations https://hapi-server.org/plot/?server=https://cdaweb.gsfc.nasa.gov/hapi&dataset=THG_L2_MAG_BOU&format=gallery THG_L2_MAG_BOU Web Service that generates plots. See https://hapi-server.org/plot/ for the API. PNG PDF SVG THEMIS Ground Based Observatory (from all.xml/observatory/description/@short) Boulder, Colorado (from all.xml/instrument/description/@short) Space Physics (from Master/CDFglobalAttributes/Discipline) Magnetospheric Science (from Master/CDFglobalAttributes/Discipline) Ionospheric Science (from Master/CDFglobalAttributes/Discipline) THG_L2 (from Master/CDFglobalAttributes/Source_name) THEMIS Ground Based Observatory (from Master/CDFglobalAttributes/Source_name) MAG (from Master/CDFglobalAttributes/Data_type) BOU (from all.xml/instrument/@ID) Earth.NearSurface.Ionosphere Earth.Surface thg_mag_bou_Epoch thg_mag_bou_epoch CATDESC: 'thg_mag_bou_Epoch'. Notes not in Master CDF: 'The units are the units in CDF files. For other web services, this variable is may be represented as a time string.' Scalar Temporal B in HEZ Components thg_mag_bou Master CDF CATDESC: 'Magnetic field variation B in HEZ vector components'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is thg_mag_bou_epoch.' NaN 3 nT nT nT thg_mag_bou_time thg_mag_bou_time Master CDF CATDESC: 'thg_mag_bou_time,.UTC, in seconds since 01-Jan-1970 00:00:00'. Master CDF VAR_NOTES: 'Unleaped seconds'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is thg_mag_bou_epoch.' sec NaN H component of B thg_magh_bou Master CDF CATDESC: '---> H - Local magnetic North component of B'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is thg_mag_bou_epoch.' nT NaN 3 E component of B thg_magd_bou Master CDF CATDESC: '---> E - Local magnetic East component of B'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is thg_mag_bou_epoch.' nT NaN 3 Z component of B thg_magz_bou Master CDF CATDESC: '---> Z - Local vertical down component of B'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is thg_mag_bou_epoch.' nT NaN 3