{
  "Spase": {
    "xmlns:xsi": "http://www.w3.org/2001/XMLSchema-instance",
    "xmlns": "http://www.spase-group.org/data/schema",
    "xsi:schemaLocation": "https://www.spase-group.org/data/schema https://www.spase-group.org/data/schema/spase-2.7.1.xsd",
    "Version": "2.7.1",
    "MetadataRightsList": {
      "Rights": {
        "SchemeURI": "https://spdx.org/licenses/",
        "RightsIdentifierScheme": "SPDX",
        "RightsIdentifier": "CC0-1.0",
        "RightsURI": "https://spdx.org/licenses/CC0-1.0.html",
        "RightsName": "Creative Commons Zero v1.0 Universal",
        "Note": "CC0 1.0 Universal is the Creative Commons license applicable to all publicly available SPASE metadata descriptions"
      }
    },
    "NumericalData": {
      "ResourceID": "spase://NASA/NumericalData/Cassini/MAG/Cruise.Phase/PT1M",
      "NamingAuthority": "NASA",
      "ResourceType": "NumericalData",
      "ResourceHeader": {
        "ResourceName": "Cassini Cruise Phase 1-Minute Magnetometer Data",
        "DOI": "https://doi.org/10.48322/gn88-1h66",
        "ReleaseDate": "2025-12-04T13:29:01Z",
        "RevisionHistory": {
          "RevisionEvent": [
            {
              "ReleaseDate": "2021-03-10T20:13:28Z",
              "Note": "Only known prior ReleaseDate of the metadata"
            },
            {
              "ReleaseDate": "2025-11-14T16:01:56Z",
              "Note": "Added PublicationInfo. Added ResourceType and NamingAuthority. Changed http to https in top-level schemaLocation attribute. Fixed version number separator in top-level schemaLocation attribute. Matched version number in schemaLocation attribute to updated value in Version tag. ZCB"
            },
            {
              "ReleaseDate": "2025-12-04T13:29:01Z",
              "Note": "Added MetadataRightsList and RightsList(s). Updated to 2.7.1. ZCB"
            }
          ]
        },
        "Description": "Cassini cruise phase 1-minute-averaged magnetic field data taken during the interval between mid-1999 when near-continuous magnetic field observations were begun and the mid-2004 insertion of Cassini into Saturn orbit. There are no planetary encounter data included. The data are in RTN coordinates. The data are mostly from the fluxgate magnetometer (FGM). The table at https://spdf.gsfc.nasa.gov/pub/data/cassini/vhm.txt identifies the 52 days in 2000-2004 for which the data are solely from the vector helium magnetometer (VHM). Days not in the table contain only FGM data. The data were produced from raw (L1A) data at the PDS/PPI node using software provided by the Cassini MAG team, and employing the latest calibration available. PDS/PPI produced both 1-sec vectors and 1-min averages. The MAG team reports that while range-0 data are well calibrated for both FGM and VHM, higher range data need improvement.",
        "Acknowledgement": "Please acknowledge the PI and the National Space Science Data Center for these data",
        "PublicationInfo": {
          "Authors": "Strangeway, Robert J.",
          "PublicationDate": "2025-11-14T16:01:56Z",
          "PublishedBy": "Space Physics Data Facility"
        },
        "Contact": [
          {
            "PersonID": "spase://SMWG/Person/Natalia.E.Papitashvili",
            "Role": "TechnicalContact"
          },
          {
            "PersonID": "spase://SMWG/Person/Raymond.J.Walker",
            "Role": "DataProducer"
          },
          {
            "PersonID": "spase://SMWG/Person/Robert.J.Strangeway",
            "Role": "PrincipalInvestigator"
          }
        ],
        "InformationURL": {
          "Name": "README for Cassini Magnetometer Data",
          "URL": "https://spdf.gsfc.nasa.gov/pub/data/cassini/mag_1min/ascii/aareadme.txt"
        },
        "PriorID": [
          "spase://VHO/NumericalData/Cassini/MAG/Cruise.Phase/PT1M",
          "spase://VSPO/NumericalData/Cassini/MAG/ASCII/PT1M",
          "spase://VSPO/NumericalData/P_CASSINI_MAG_1M",
          "spase://VSPO/NumericalData/Cassini/MAG/PT60S",
          "spase://VSPO/NumericalData/Cassini/MAG/Cruise.Phase/PT1M"
        ]
      },
      "AccessInformation": {
        "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
        "Availability": "Online",
        "AccessRights": "Open",
        "RightsList": {
          "Rights": {
            "SchemeURI": "https://spdx.org/licenses/",
            "RightsIdentifierScheme": "SPDX",
            "RightsIdentifier": "CC0-1.0",
            "RightsURI": "https://spdx.org/licenses/CC0-1.0.html",
            "RightsName": "Creative Commons Zero v1.0 Universal",
            "Note": "CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products"
          }
        },
        "AccessURL": [
          {
            "Name": "FTPBrowser",
            "URL": "https://omniweb.gsfc.nasa.gov/ftpbrowser/cassini_min.html"
          },
          {
            "Name": "FTPS from SPDF (not with most browsers)",
            "URL": "ftps://spdf.gsfc.nasa.gov/pub/data/cassini/mag_1min/ascii/",
            "Description": "In ASCII via ftp from SPDF"
          },
          {
            "Name": "HTTPS from SPDF",
            "URL": "https://spdf.gsfc.nasa.gov/pub/data/cassini/mag_1min/ascii/",
            "Description": "In ASCII via HTTP from SPDF"
          }
        ],
        "Format": "Text.ASCII",
        "DataExtent": {
          "Quantity": "54",
          "Units": "MB",
          "Per": "P1Y"
        }
      },
      "InstrumentID": "spase://SMWG/Instrument/Cassini/MAG",
      "MeasurementType": "MagneticField",
      "TemporalDescription": {
        "TimeSpan": {
          "StartDate": "2000-01-01T00:00:00Z",
          "StopDate": "2004-12-31T23:59:59Z"
        },
        "Cadence": "PT1M"
      },
      "ObservedRegion": "Heliosphere.NearEarth",
      "Parameter": [
        {
          "Name": "Time",
          "ParameterKey": "Column_1",
          "Description": "Time YYYY DOY HH MM for averages built from MM:00 to (MM+1):00",
          "Caveats": "Two changes were made to the PDS/PPI-provided files. First, PDS time tags of the format YYYY-MM-DDTHH:MM:DD were replaced by FTPBrowser time tags of the format YYYY DDD HH MM. Secondly, minutes with no data had no record in the PDS-provided files but have records, with all fill values except the time tags, in the FTPBrowser version.",
          "Support": {
            "SupportQuantity": "Temporal"
          }
        },
        {
          "Name": "Br",
          "ParameterKey": "Column_2",
          "Description": "BR, R component in RTN, nT",
          "Units": "nT",
          "CoordinateSystem": {
            "CoordinateRepresentation": "Cartesian",
            "CoordinateSystemName": "RTN"
          },
          "Field": {
            "Qualifier": "Component.I",
            "FieldQuantity": "Magnetic"
          }
        },
        {
          "Name": "Bt",
          "ParameterKey": "Column_3",
          "Description": "BT, T component in RTN, nT",
          "Units": "nT",
          "CoordinateSystem": {
            "CoordinateRepresentation": "Cartesian",
            "CoordinateSystemName": "RTN"
          },
          "Field": {
            "Qualifier": "Component.J",
            "FieldQuantity": "Magnetic"
          }
        },
        {
          "Name": "Bn",
          "ParameterKey": "Column_4",
          "Description": "BN, N component in RTN, nT",
          "Units": "nT",
          "CoordinateSystem": {
            "CoordinateRepresentation": "Cartesian",
            "CoordinateSystemName": "RTN"
          },
          "Field": {
            "Qualifier": "Component.K",
            "FieldQuantity": "Magnetic"
          }
        },
        {
          "Name": "B",
          "ParameterKey": "Column_5",
          "Description": "B, field magnitude, nT",
          "Units": "nT",
          "CoordinateSystem": {
            "CoordinateRepresentation": "Cartesian",
            "CoordinateSystemName": "RTN"
          },
          "Field": {
            "Qualifier": "Magnitude",
            "FieldQuantity": "Magnetic"
          }
        },
        {
          "Name": "Range",
          "ParameterKey": "Column_6",
          "Description": "Heliocentric radial distance of spacecraft, AU",
          "Units": "AU",
          "Support": {
            "SupportQuantity": "Positional"
          }
        },
        {
          "Name": "Latitude",
          "ParameterKey": "Column_7",
          "Description": "Heliocentric latitude of spacecraft, deg.",
          "Caveats": "IHG is what NSSDC/SPDF typically refers to as HGI",
          "Units": "degrees",
          "CoordinateSystem": {
            "CoordinateRepresentation": "Cartesian",
            "CoordinateSystemName": "HGI"
          },
          "Support": {
            "SupportQuantity": "Positional"
          }
        },
        {
          "Name": "Longitude",
          "ParameterKey": "Column_8",
          "Description": "Longitude of spacecraft, East from Sun-Aries line, deg.",
          "Caveats": "IHG is what NSSDC/SPDF typically refers to as HGI",
          "Units": "degrees",
          "CoordinateSystem": {
            "CoordinateRepresentation": "Cartesian",
            "CoordinateSystemName": "HGI"
          },
          "Support": {
            "SupportQuantity": "Positional"
          }
        },
        {
          "Name": "X_IHG",
          "ParameterKey": "Column_9",
          "Description": "Inertial Heliographic X component of sun-to-spacecraft vector, AU",
          "Caveats": "IHG is what NSSDC/SPDF typically refers to as HGI",
          "Units": "AU",
          "CoordinateSystem": {
            "CoordinateRepresentation": "Cartesian",
            "CoordinateSystemName": "HGI"
          },
          "Support": {
            "SupportQuantity": "Positional"
          }
        },
        {
          "Name": "Y_IHG",
          "ParameterKey": "Column_10",
          "Description": "Inertial Heliographic Y component of sun-to-spacecraft vector, AU",
          "Caveats": "IHG is what NSSDC/SPDF typically refers to as HGI",
          "Units": "AU",
          "CoordinateSystem": {
            "CoordinateRepresentation": "Cartesian",
            "CoordinateSystemName": "HGI"
          },
          "Support": {
            "SupportQuantity": "Positional"
          }
        },
        {
          "Name": "Z_IHG",
          "ParameterKey": "Column_11",
          "Description": "Inertial Heliographic Z component of sun-to-spacecraft vector, AU",
          "Caveats": "IHG is what NSSDC/SPDF typically refers to as HGI",
          "Units": "AU",
          "CoordinateSystem": {
            "CoordinateRepresentation": "Cartesian",
            "CoordinateSystemName": "HGI"
          },
          "Support": {
            "SupportQuantity": "Positional"
          }
        },
        {
          "Name": "NPTS",
          "ParameterKey": "Column_12",
          "Description": "Number of 1-second values in the 1-minute average",
          "Support": {
            "SupportQuantity": "Other"
          }
        }
      ]
    }
  }
}