{ "Spase": { "xmlns": "http://www.spase-group.org/data/schema", "xmlns:xsi": "http://www.w3.org/2001/XMLSchema-instance", "xsi:schemaLocation": "http://www.spase-group.org/data/schema http://www.spase-group.org/data/schema/spase-2_6_1.xsd", "_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.", "Version": "2.6.1", "_MasterURL": "https://cdaweb.gsfc.nasa.gov/pub/software/cdawlib/0JSONS/imap_ialirt_l1_realtime_00000000_v01.json (from all.xml)", "NumericalData": { "ResourceID": null, "_ResourceID": "Source: https://github.com/rweigel/cdawmeta-spase/blob/main/ResourceID.json", "ResourceHeader": { "ResourceName": "IMAP Active Link for Real-Time (I-ALiRT) Level-1 Data.", "_ResourceName": "Source: Master/CDFglobalAttributes/Logical_source_description", "AlternateName": "imap_ialirt_l1_realtime", "_AlternateName": "Source: Master/CDFglobalAttributes/Logical_source", "Description": "The Interstellar Mapping and Acceleration Probe (IMAP) mission includes the Active Link for Real-Time (I-ALiRT) system, which provides continuous, low-latency space weather data. I-ALiRT broadcasts real-time measurements from IMAP via NASA's Deep Space Network and international ground stations. It has data from 5 of the IMAP instruments: SWE (Solar Wind Electron), CoDICE (Compact Dual Ion Composition Experiment), HIT (High-energy Ion Telescope), MAG (Magnetometer), and SWAPI (Solar Wind and Pickup Ion). See https://imap.princeton.edu for more details. ", "_Description": "Source: Master/CDFglobalAttributes/TEXT", "Acknowledgement": "Please acknowledge the IMAP Mission Principal Investigator, Prof. David J. McComas of Princeton University. ", "_Acknowledgement": "Source: Master/CDFglobalAttributes/Acknowledgement", "_Rights": { "Name": "SPDX", "Description": "Creative Commons Zero v1.0 Universal", "URL": "https://spdx.org/licenses/CC0-1.0.html", "SchemeURI": "https://spdx.org/licenses/" }, "InformationURL": [] }, "Caveats": "All IMAP data products are publicly released and citable for use in publications. Please consult the IMAP team publications and personnel for further details on production, processing, and usage of these data. ", "_Caveats": "Source: Master/CDFglobalAttributes/Rules_of_use", "DOI": null, "_DOI": "Source: https://github.com/rweigel/cdawmeta-spase/blob/main/DOI.json", "AccessInformation": [ { "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF", "Availability": "Online", "AccessRights": "Open", "Acknowledgement": "SPDF/CDAWeb. Please also acknowledge the data producer: Prof. David J. McComas at Princeton University", "Format": [ "CDF" ], "Style": "Listing", "AccessURL": { "Name": "HTTPS from SPDF", "URL": "https://cdaweb.gsfc.nasa.gov/pub/data/imap/ialirt/l1/realtime", "Description": "In CDF via HTTP from CDAWeb", "AccessFilenameTemplate": "imap_ialirt_l1_realtime_%Y%m%d_%Q.cdf", "AccessDirectoryTemplate": "%Y", "ProductKey": "IMAP_IALIRT_L1_REALTIME" } }, { "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF", "Availability": "Online", "AccessRights": "Open", "Acknowledgement": "SPDF/CDAWeb. Please also acknowledge the data producer: Prof. David J. McComas at Princeton University", "Format": [ "CDF" ], "Style": "Listing", "AccessURL": { "Name": "FTPS from SPDF", "URL": "ftps://cdaweb.gsfc.nasa.gov/pub/data/imap/ialirt/l1/realtime", "Description": "In CDF via HTTP from CDAWeb", "AccessFilenameTemplate": "imap_ialirt_l1_realtime_%Y%m%d_%Q.cdf", "AccessDirectoryTemplate": "%Y", "ProductKey": "IMAP_IALIRT_L1_REALTIME" } }, { "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF", "Availability": "Online", "AccessRights": "Open", "Acknowledgement": "SPDF/CDAWeb. Please also acknowledge the data producer: Prof. David J. McComas at Princeton University", "Format": [ "CDF", "CSV", "GIF", "NetCDF", "PNG", "PS", "PDF", "XML", "x_Script.IDL", "x_Script.Python", "Text.ASCII", "x_WAV" ], "AccessURL": { "Name": "CDAWeb Web Service", "URL": "https://cdaweb.gsfc.nasa.gov/WebServices/", "Style": "WebService", "Description": "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.", "ProductKey": "IMAP_IALIRT_L1_REALTIME" } }, { "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF", "Availability": "Online", "AccessRights": "Open", "Acknowledgement": "SPDF/CDAWeb. Please also acknowledge the data producer: Prof. David J. McComas at Princeton University", "Format": [ "CDF", "GIF", "PDF", "Text.ASCII", "x_WAV" ], "AccessURL": { "Name": "CDAWeb Web Service user interface", "URL": "https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?index=sp_phys&dataset=IMAP_IALIRT_L1_REALTIME", "Style": "WebService", "ProductKey": "IMAP_IALIRT_L1_REALTIME", "Description": "Web service user interface for this product." } }, { "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF", "Availability": "Online", "AccessRights": "Open", "Acknowledgement": "SPDF/CDAWeb. Please also acknowledge the data producer: Prof. David J. McComas at Princeton University", "Format": [ "x_Script.IDL", "x_Script.Python" ], "AccessURL": { "Name": "CDAWeb Python Script", "URL": "https://cdaweb.gsfc.nasa.gov/WS/cdasr/1/dataviews/sp_phys/datasets/IMAP_IALIRT_L1_REALTIME/clientLibraryExample/", "ProductKey": "IMAP_IALIRT_L1_REALTIME", "Style": "WebService", "Description": "Web service that generates a Python script to access this product." } }, { "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF", "Availability": "Online", "AccessRights": "Open", "Acknowledgement": "SPDF/SSCWeb. Please also acknowledge the data producer: Prof. David J. McComas at Princeton University", "Format": [ "HTML" ], "AccessURL": { "Name": "4D Orbit Viewer", "URL": "https://sscweb.gsfc.nasa.gov/4dorbit/?sc=IMAP_IALIRT_L1_REALTIME", "ProductKey": "IMAP_IALIRT_L1_REALTIME", "Style": "x_Visualization", "Description": "Web Service to this product." } }, { "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF", "Availability": "Online", "AccessRights": "Open", "Acknowledgement": "SPDF/CDAWeb and the HAPI project. Please also acknowledge the data producer: Prof. David J. McComas at Princeton University", "Format": [ "CSV", "JSON", "Binary" ], "AccessURL": { "Name": "CDAWeb HAPI Server", "URL": "https://hapi-server.org/servers/#server=CDAWeb&dataset=IMAP_IALIRT_L1_REALTIME@0", "Style": "HAPI", "ProductKey": [ "IMAP_IALIRT_L1_REALTIME@0", "IMAP_IALIRT_L1_REALTIME@1", "IMAP_IALIRT_L1_REALTIME@2", "IMAP_IALIRT_L1_REALTIME@3", "IMAP_IALIRT_L1_REALTIME@4", "IMAP_IALIRT_L1_REALTIME@5", "IMAP_IALIRT_L1_REALTIME@6" ], "Description": "Web Service to this product using the HAPI interface. Note that HAPI dataset has a collection of parameters, each having the same time stamps. This CDAWeb dataset contains 7 HAPI-type datasets. The @0, @1, ... at the end of the ParameterKeys indicates the index of the CDAWeb dataset. (The dataset index <=> CDF file time variable pairs are @0 => codice_hi_epoch, @1 => codice_lo_epoch, @2 => hit_epoch, @3 => mag_epoch, @4 => swapi_epoch, @5 => swe_epoch, @6 => ephemeris_epoch.)" } }, { "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF", "Availability": "Online", "AccessRights": "Open", "Acknowledgement": "SPDF/CDAWeb and the HAPI project. Please also acknowledge the data producer: Prof. David J. McComas at Princeton University", "Format": [ "x_Script.IDL", "x_Script.Javascript", "x_Script.MATLAB", "x_Script.Python", "x_Script.Autoplot", "x_Script.curl", "x_Script.wget" ], "AccessURL": { "Name": "CDAWeb HAPI Script in Multiple Languages", "URL": "https://hapi-server.org/servers/#server=CDAWeb&dataset=IMAP_IALIRT_L1_REALTIME@0&return=script", "Style": "HAPI", "ProductKey": [ "IMAP_IALIRT_L1_REALTIME@0", "IMAP_IALIRT_L1_REALTIME@1", "IMAP_IALIRT_L1_REALTIME@2", "IMAP_IALIRT_L1_REALTIME@3", "IMAP_IALIRT_L1_REALTIME@4", "IMAP_IALIRT_L1_REALTIME@5", "IMAP_IALIRT_L1_REALTIME@6" ], "Description": "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. Note that HAPI dataset has a collection of parameters, each having the same time stamps. This CDAWeb dataset contains 7 HAPI-type datasets. The @0, @1, ... at the end of the ParameterKeys indicates the index of the CDAWeb dataset. (The dataset index <=> CDF file time variable pairs are @0 => codice_hi_epoch, @1 => codice_lo_epoch, @2 => hit_epoch, @3 => mag_epoch, @4 => swapi_epoch, @5 => swe_epoch, @6 => ephemeris_epoch.)" } }, { "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF", "Availability": "Online", "AccessRights": "Open", "Acknowledgement": "SPDF/CDAWeb and the HAPI project. Please also acknowledge the data producer: Prof. David J. McComas at Princeton University", "Format": [ "PNG", "PDF", "SVG" ], "AccessURL": { "Name": "HAPI visualizations", "URL": "https://hapi-server.org/plot/?server=https://cdaweb.gsfc.nasa.gov/hapi&dataset=IMAP_IALIRT_L1_REALTIME@0&format=gallery", "Style": "x_Visualization", "ProductKey": [ "IMAP_IALIRT_L1_REALTIME@0", "IMAP_IALIRT_L1_REALTIME@1", "IMAP_IALIRT_L1_REALTIME@2", "IMAP_IALIRT_L1_REALTIME@3", "IMAP_IALIRT_L1_REALTIME@4", "IMAP_IALIRT_L1_REALTIME@5", "IMAP_IALIRT_L1_REALTIME@6" ], "Description": "Web Service that generates plots. See https://hapi-server.org/plot/ for the API." } } ], "_AccessInformation": "Source: https://github.com/rweigel/cdawmeta-spase/blob/main/AccessInformation.json", "TemporalDescription": { "TimeSpan": { "StartDate": "2026-02-01T00:00:00Z", "StopDate": "2026-04-10T23:59:12Z" }, "_TemporalDescription": "Generated from all.xml/@timerange_start and all.xml/@timerange_stop" }, "Keyword": [ "Interstellar Mapping and Acceleration Probe (from all.xml/observatory/description/@short)", "IMAP I-ALiRT (IMAP Active Link in Real Time) (from all.xml/instrument/description/@short)", "Solar Physics (from Master/CDFglobalAttributes/Discipline)", "Heliospheric Physics (from Master/CDFglobalAttributes/Discipline)", "IMAP (from Master/CDFglobalAttributes/Source_name)", "Interstellar Mapping and Acceleration Probe (from Master/CDFglobalAttributes/Source_name)", "L1_REALTIME (from Master/CDFglobalAttributes/Data_type)", "Level-1 Realtime (from Master/CDFglobalAttributes/Data_type)", "IALiRT (from all.xml/instrument/@ID)" ], "ObservedRegion": null, "_ObservedRegion": "Source: https://github.com/rweigel/cdawmeta-spase/blob/main/ObservedRegion.json", "ProcessingLevel": null, "_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", "InstrumentID": null, "MeasurementType": null, "Parameter": [ { "Name": "Time", "ParameterKey": "codice_hi_epoch", "Description": "Time CoDICE-Hi instrument took the measurement, number of nanoseconds since J2000 with leap seconds included", "_Description": "Zero corresponds to J2000. See https://spdf.gsfc.nasa.gov/pub/software/cdf/doc/cdf390/cdf390ug.pdf", "Units": "ns", "_Note": "This variable is in the source CDF file. Not all web services will provide access to this variable in this form (e.g., an ISO 8601 string may be used). If the source of the CDF file is a different file type, it may be have been represented in a different format." }, { "Name": "H+ intensity", "ParameterKey": "codice_hi_h", "Description": "Proton flux from CoDICE-Hi in 15 energy bins between 0.02 to 3.62 MeV over 4 spin angles and 4 polar angles", "Units": "counts / cm2-sr-s-MeV", "FillValue": "-1e+31", "Structure": { "Size": [ 15, 4, 4 ] } }, { "Name": "Time", "ParameterKey": "codice_lo_epoch", "Description": "Time CoDICE-Lo instrument took the measurement, number of nanoseconds since J2000 with leap seconds included", "_Description": "Zero corresponds to J2000. See https://spdf.gsfc.nasa.gov/pub/software/cdf/doc/cdf390/cdf390ug.pdf", "Units": "ns", "_Note": "This variable is in the source CDF file. Not all web services will provide access to this variable in this form (e.g., an ISO 8601 string may be used). If the source of the CDF file is a different file type, it may be have been represented in a different format." }, { "Name": "C/O abundance ratio", "ParameterKey": "codice_lo_c_over_o_abundance", "Description": "C/O elemental abundance ratio from CoDICE-Lo", "Units": " ", "FillValue": "-1e+31" }, { "Name": "Mg/O abundance ratio", "ParameterKey": "codice_lo_mg_over_o_abundance", "Description": "Mg/O elemental abundance ratio from CoDICE-Lo", "Units": " ", "FillValue": "-1e+31" }, { "Name": "Fe/O abundance ratio", "ParameterKey": "codice_lo_fe_over_o_abundance", "Description": "Fe/O elemental abundance ratio from CoDICE-Lo", "Units": " ", "FillValue": "-1e+31" }, { "Name": "C+6/C+5 charge state ratio", "ParameterKey": "codice_lo_c_plus_6_over_c_plus_5", "Description": "C+6/C+5 charge state ratio from CoDICE-Lo", "Units": " ", "FillValue": "-1e+31" }, { "Name": "O7+/O6+ charge state ratio", "ParameterKey": "codice_lo_o_plus_7_over_o_plus_6", "Description": "O+7/O+6 charge state ratio from CoDICE-Lo", "Units": " ", "FillValue": "-1e+31" }, { "Name": "Fe low/high charge state ratio", "ParameterKey": "codice_lo_fe_low_over_fe_high", "Description": "Fe low/Fe high charge state ratio from CoDICE-Lo", "Units": " ", "FillValue": "-1e+31" }, { "Name": "Time", "ParameterKey": "hit_epoch", "Description": "Time HIT instrument took the measurement, number of nanoseconds since J2000 with leap seconds included", "_Description": "Zero corresponds to J2000. See https://spdf.gsfc.nasa.gov/pub/software/cdf/doc/cdf390/cdf390ug.pdf", "Units": "ns", "_Note": "This variable is in the source CDF file. Not all web services will provide access to this variable in this form (e.g., an ISO 8601 string may be used). If the source of the CDF file is a different file type, it may be have been represented in a different format." }, { "Name": "Medium energy electron count rate (A-side)", "ParameterKey": "hit_e_a_side_med_en", "Description": "Count rates from HIT for electrons below 1 MeV, A-side aperture (anti-sunward) look direction", "Units": "counts per second", "FillValue": "-1e+31" }, { "Name": "Medium energy electron count rate (B-side)", "ParameterKey": "hit_e_b_side_med_en", "Description": "Count rates from HIT for electrons below 1 MeV, B-side aperture (sunward) look direction", "Units": "counts per second", "FillValue": "-1e+31" }, { "Name": "Proton count rate 6 to 8 MeV (omni)", "ParameterKey": "hit_h_omni_low_en", "Description": "Count rates from HIT for protons between 6 to 8 MeV, omnidirectional (sum of particles divided by full sky area)", "Units": "counts per second", "FillValue": "-1e+31" }, { "Name": "Proton count rate 12 to 15 MeV (omni)", "ParameterKey": "hit_h_omni_med_en", "Description": "Count rates from HIT for protons between 12 to 15 MeV, omnidirectional (sum of particles divided by full sky area)", "Units": "counts per second", "FillValue": "-1e+31" }, { "Name": "Helium count rate 6 to 8 MeV/nuc (omni)", "ParameterKey": "hit_he_omni_low_en", "Description": "Count rates from HIT for He4 between 6 to 8 MeV/nuc, omnidirectional (sum of particles divided by full sky area)", "Units": "counts per second", "FillValue": "-1e+31" }, { "Name": "Helium count rate 15 to 70 MeV/nuc (omni)", "ParameterKey": "hit_he_omni_high_en", "Description": "Count rates from HIT for He4 between 15 to 70 MeV/nuc, omnidirectional (sum of particles divided by full sky area)", "Units": "counts per second", "FillValue": "-1e+31" }, { "Name": "Time", "ParameterKey": "mag_epoch", "Description": "Time MAG instrument took the measurement, number of nanoseconds since J2000 with leap seconds included", "_Description": "Zero corresponds to J2000. See https://spdf.gsfc.nasa.gov/pub/software/cdf/doc/cdf390/cdf390ug.pdf", "Units": "ns", "_Note": "This variable is in the source CDF file. Not all web services will provide access to this variable in this form (e.g., an ISO 8601 string may be used). If the source of the CDF file is a different file type, it may be have been represented in a different format." }, { "Name": "B vector magnitude", "ParameterKey": "mag_B_magnitude", "Description": "Magnitude of the magnetic field vector from MAG", "Units": "nT", "Cadence": "PT3.999966S", "_Cadence": "Counts based on variable 'mag_epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/imap/ialirt/l1/realtime/2026/imap_ialirt_l1_realtime_20260201_v001.cdf. The most common cadence, 3999965952 [ns] = PT3.999966S, occurred for 33.9332% of the 3262 timesteps.", "FillValue": "-1e+31" }, { "Name": "B elevation angle in GSE coordinates", "ParameterKey": "mag_theta_B_GSE", "Description": "Elevation (theta) angle of the magnetic field in GSE coordinates from MAG", "Units": "degrees", "Cadence": "PT3.999966S", "_Cadence": "Counts based on variable 'mag_epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/imap/ialirt/l1/realtime/2026/imap_ialirt_l1_realtime_20260201_v001.cdf. The most common cadence, 3999965952 [ns] = PT3.999966S, occurred for 33.9332% of the 3262 timesteps.", "FillValue": "-1e+31" }, { "Name": "B azimuth angle in GSE coordinates", "ParameterKey": "mag_phi_B_GSE", "Description": "Azimuth (phi) angle of the magnetic field in GSE coordinates from MAG", "Units": "degrees", "Cadence": "PT3.999966S", "_Cadence": "Counts based on variable 'mag_epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/imap/ialirt/l1/realtime/2026/imap_ialirt_l1_realtime_20260201_v001.cdf. The most common cadence, 3999965952 [ns] = PT3.999966S, occurred for 33.9332% of the 3262 timesteps.", "FillValue": "-1e+31" }, { "Name": "B elevation angle in GSM coordinates", "ParameterKey": "mag_theta_B_GSM", "Description": "Elevation (theta) angle of the magnetic field in GSM coordinates from MAG", "Units": "degrees", "Cadence": "PT3.999966S", "_Cadence": "Counts based on variable 'mag_epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/imap/ialirt/l1/realtime/2026/imap_ialirt_l1_realtime_20260201_v001.cdf. The most common cadence, 3999965952 [ns] = PT3.999966S, occurred for 33.9332% of the 3262 timesteps.", "FillValue": "-1e+31" }, { "Name": "B azimuth angle in GSM coordinates", "ParameterKey": "mag_phi_B_GSM", "Description": "Azimuth (phi) angle of the magnetic field in GSM coordinates from MAG", "Units": "degrees", "Cadence": "PT3.999966S", "_Cadence": "Counts based on variable 'mag_epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/imap/ialirt/l1/realtime/2026/imap_ialirt_l1_realtime_20260201_v001.cdf. The most common cadence, 3999965952 [ns] = PT3.999966S, occurred for 33.9332% of the 3262 timesteps.", "FillValue": "-1e+31" }, { "Name": "B vector in GSE coordinates", "ParameterKey": "mag_B_GSE", "Description": "Magnetic field vector in GSE coordinates from MAG", "Units": "nT", "Cadence": "PT3.999966S", "_Cadence": "Counts based on variable 'mag_epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/imap/ialirt/l1/realtime/2026/imap_ialirt_l1_realtime_20260201_v001.cdf. The most common cadence, 3999965952 [ns] = PT3.999966S, occurred for 33.9332% of the 3262 timesteps.", "FillValue": "-1e+31", "Structure": { "Size": [ 3 ] } }, { "Name": "B vector in GSM coordinates", "ParameterKey": "mag_B_GSM", "Description": "Magnetic field vector in GSM coordinates from MAG", "Units": "nT", "Cadence": "PT3.999966S", "_Cadence": "Counts based on variable 'mag_epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/imap/ialirt/l1/realtime/2026/imap_ialirt_l1_realtime_20260201_v001.cdf. The most common cadence, 3999965952 [ns] = PT3.999966S, occurred for 33.9332% of the 3262 timesteps.", "FillValue": "-1e+31", "Structure": { "Size": [ 3 ] } }, { "Name": "B vector in RTN coordinates", "ParameterKey": "mag_B_RTN", "Description": "Magnetic field vector in RTN coordinates from MAG", "Units": "nT", "Cadence": "PT3.999966S", "_Cadence": "Counts based on variable 'mag_epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/imap/ialirt/l1/realtime/2026/imap_ialirt_l1_realtime_20260201_v001.cdf. The most common cadence, 3999965952 [ns] = PT3.999966S, occurred for 33.9332% of the 3262 timesteps.", "FillValue": "-1e+31", "Structure": { "Size": [ 3 ] } }, { "Name": "Time", "ParameterKey": "swapi_epoch", "Description": "Time SWAPI instrument took the measurement, number of nanoseconds since J2000 with leap seconds included", "_Description": "Zero corresponds to J2000. See https://spdf.gsfc.nasa.gov/pub/software/cdf/doc/cdf390/cdf390ug.pdf", "Units": "ns", "_Note": "This variable is in the source CDF file. Not all web services will provide access to this variable in this form (e.g., an ISO 8601 string may be used). If the source of the CDF file is a different file type, it may be have been represented in a different format." }, { "Name": "SW proton pseudo density", "ParameterKey": "swapi_pseudo_proton_density", "Description": "Pseudo solar wind proton number density from SWAPI", "Units": "1/cm^3", "Cadence": "PT11.999989S", "_Cadence": "Counts based on variable 'swapi_epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/imap/ialirt/l1/realtime/2026/imap_ialirt_l1_realtime_20260201_v001.cdf. The most common cadence, 11999989376 [ns] = PT11.999989S, occurred for 87.0191% of the 2782 timesteps.", "FillValue": "-1e+31" }, { "Name": "SW proton pseudo V in solar inertial frame", "ParameterKey": "swapi_pseudo_proton_speed", "Description": "Pseudo solar wind proton speed from SWAPI", "Units": "km/sec", "Cadence": "PT11.999989S", "_Cadence": "Counts based on variable 'swapi_epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/imap/ialirt/l1/realtime/2026/imap_ialirt_l1_realtime_20260201_v001.cdf. The most common cadence, 11999989376 [ns] = PT11.999989S, occurred for 87.0191% of the 2782 timesteps.", "FillValue": "-1e+31" }, { "Name": "SW proton pseudo temperature", "ParameterKey": "swapi_pseudo_proton_temperature", "Description": "Pseudo solar wind proton temperature from SWAPI", "Units": "Kelvin", "Cadence": "PT11.999989S", "_Cadence": "Counts based on variable 'swapi_epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/imap/ialirt/l1/realtime/2026/imap_ialirt_l1_realtime_20260201_v001.cdf. The most common cadence, 11999989376 [ns] = PT11.999989S, occurred for 87.0191% of the 2782 timesteps.", "FillValue": "-1e+31" }, { "Name": "Time", "ParameterKey": "swe_epoch", "Description": "Time SWE instrument took the measurement, number of nanoseconds since J2000 with leap seconds included", "_Description": "Zero corresponds to J2000. See https://spdf.gsfc.nasa.gov/pub/software/cdf/doc/cdf390/cdf390ug.pdf", "Units": "ns", "_Note": "This variable is in the source CDF file. Not all web services will provide access to this variable in this form (e.g., an ISO 8601 string may be used). If the source of the CDF file is a different file type, it may be have been represented in a different format." }, { "Name": "Counterstreaming e- (1=counterstreaming)", "ParameterKey": "swe_counterstreaming_electrons", "Description": "Binary value from SWE indicating the presence (1) or absence (0) of counterstreaming electron flow", "Units": "1=counterstreaming", "Cadence": "PT30.999973S", "_Cadence": "Counts based on variable 'swe_epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/imap/ialirt/l1/realtime/2026/imap_ialirt_l1_realtime_20260201_v001.cdf. The most common cadence, 30999972608 [ns] = PT30.999973S, occurred for 57.7510% of the 719 timesteps.", "FillValue": "255" }, { "Name": "Time", "ParameterKey": "ephemeris_epoch", "Description": "Time of ephemeris measurement, number of nanoseconds since J2000 with leap seconds included", "_Description": "Zero corresponds to J2000. See https://spdf.gsfc.nasa.gov/pub/software/cdf/doc/cdf390/cdf390ug.pdf", "Units": "ns", "_Note": "This variable is in the source CDF file. Not all web services will provide access to this variable in this form (e.g., an ISO 8601 string may be used). If the source of the CDF file is a different file type, it may be have been represented in a different format." }, { "Name": "Spacecraft position in GSE", "ParameterKey": "sc_position_GSE", "Description": "Spacecraft position vector in GSE coordinates", "Units": "km", "Cadence": "PT6S", "_Cadence": "Counts based on variable 'ephemeris_epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/imap/ialirt/l1/realtime/2026/imap_ialirt_l1_realtime_20260201_v001.cdf. The most common cadence, 6000000000 [ns] = PT6S, occurred for 9.7853% of the 237 timesteps.", "FillValue": "-1e+31", "Structure": { "Size": [ 3 ] } }, { "Name": "Spacecraft velocity in GSE", "ParameterKey": "sc_velocity_GSE", "Description": "Spacecraft velocity vector in GSE coordinates", "Units": "km/s", "Cadence": "PT6S", "_Cadence": "Counts based on variable 'ephemeris_epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/imap/ialirt/l1/realtime/2026/imap_ialirt_l1_realtime_20260201_v001.cdf. The most common cadence, 6000000000 [ns] = PT6S, occurred for 9.7853% of the 237 timesteps.", "FillValue": "-1e+31", "Structure": { "Size": [ 3 ] } }, { "Name": "Spacecraft position in GSM coordinates", "ParameterKey": "sc_position_GSM", "Description": "Spacecraft position in GSM coordinates", "Units": "km", "Cadence": "PT6S", "_Cadence": "Counts based on variable 'ephemeris_epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/imap/ialirt/l1/realtime/2026/imap_ialirt_l1_realtime_20260201_v001.cdf. The most common cadence, 6000000000 [ns] = PT6S, occurred for 9.7853% of the 237 timesteps.", "FillValue": "-1e+31", "Structure": { "Size": [ 3 ] } }, { "Name": "Spacecraft velocity in GSM", "ParameterKey": "sc_velocity_GSM", "Description": "Spacecraft velocity vector in GSM coordinates", "Units": "km/s", "Cadence": "PT6S", "_Cadence": "Counts based on variable 'ephemeris_epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/imap/ialirt/l1/realtime/2026/imap_ialirt_l1_realtime_20260201_v001.cdf. The most common cadence, 6000000000 [ns] = PT6S, occurred for 9.7853% of the 237 timesteps.", "FillValue": "-1e+31", "Structure": { "Size": [ 3 ] } } ] } } }