{
  "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_2_9.xsd",
    "Version": "2.3.0",
    "NumericalData": {
      "ResourceID": "spase://NASA/NumericalData/Explorer43/MMF/PT2S",
      "ResourceHeader": {
        "ResourceName": "Explorer 43 Measurement of Magnetic Fields (MMF) data at 15.36 s Resolution",
        "AlternateName": [
          "IMP 6 MMF data",
          "IMP I MMF data",
          "IMP EYE MMF data"
        ],
        "ReleaseDate": "2020-07-07T21:14:33Z",
        "Description": "The Explorer 43 Measurement of Magnetic Fields (MMF) data at 15.36 s resolution in various coordinate systems.  These data consists of magnetic field vectors, variances, and spacecraft position measurements in several coordinate systems.",
        "Acknowledgement": "NASA-Office of Space Science Applications (United States); Dr. Norman F. Ness",
        "Contact": [
          {
            "PersonID": "spase://SMWG/Person/Norman.F.Ness",
            "Role": "PrincipalInvestigator"
          },
          {
            "PersonID": "spase://SMWG/Person/James.M.Weygand",
            "Role": "MetadataContact"
          }
        ],
        "InformationURL": {
          "Name": "IMP I/Explorer 43 Spacecraft Information",
          "URL": "https://nssdc.gsfc.nasa.gov/nmc/spacecraft/display.action?id=1971-019A",
          "Description": "Information about the magnetometer and other instruments onboard Explorer 43.",
          "Language": "en"
        },
        "PriorID": [
          "spase://VMO/NumericalData/Explorer/43/MMF/PT2S",
          "spase://VSPO/NumericalData/Explorer/43/MMF/PT2S",
          "spase://VSPO/NumericalData/Explorer43/MMF/PT2S"
        ]
      },
      "AccessInformation": {
        "RepositoryID": "spase://SMWG/Repository/UCLA/VMO",
        "Availability": "Online",
        "AccessRights": "Open",
        "AccessURL": {
          "Name": "Virtual Magnetospheric Observatory",
          "URL": "http://vmo.igpp.ucla.edu/data1/Explorer/43/",
          "Description": "Direct link to the Explorer 43 MMF data in ascii format."
        },
        "Format": "Text.ASCII",
        "Encoding": "None",
        "Acknowledgement": "NASA; Dr. Norman F. Ness"
      },
      "ProcessingLevel": "Calibrated",
      "ProviderResourceName": "Explorer 43 MMF",
      "ProviderProcessingLevel": "Level-2",
      "InstrumentID": "spase://SMWG/Instrument/IMP6/MMF",
      "MeasurementType": "MagneticField",
      "TemporalDescription": {
        "TimeSpan": {
          "StartDate": "1971-03-11T00:00:00",
          "StopDate": "1974-08-29T23:59:00",
          "Note": "Time format in data files is year, day-of-year, and milliseconds of the day."
        },
        "Cadence": "PT15.34S"
      },
      "Caveats": "Flag value is unknown. All of the descriptions for the parameters are taken from original notes on the data. Not all the descriptions are clear.",
      "Keyword": [
        "15.36 s",
        "Explorer",
        "IMP I"
      ],
      "Parameter": [
        {
          "Name": "Universal Time",
          "ParameterKey": "Time",
          "Description": "Universal time columns from left to right are: year, day of year, and milliseconds of the day.",
          "Caveats": "This parameter is for the last sequence included in the 15.36 s statistical computation. for all data processed prior to 01/28/72 these quantities are for the sequence following the statistical computations.",
          "Cadence": "PT1S",
          "Structure": {
            "Size": "3",
            "Description": "Universal Time expressed using a 3-column year, day of year (Jan 1 = 0), and Millisec (Elapsed millisec in the day).",
            "Element": [
              {
                "Name": "Year",
                "Index": "1",
                "ParameterKey": "Column_1"
              },
              {
                "Name": "Day of Year",
                "Index": "2",
                "ParameterKey": "Column_2"
              },
              {
                "Name": "Milliseconds of the Day",
                "Index": "3",
                "ParameterKey": "Column_3"
              }
            ]
          },
          "Support": {
            "SupportQuantity": "Temporal"
          }
        },
        {
          "Name": "Data Quality Flag",
          "Description": "8 bit counts. Order: from left to right: 2^7, 2^6,2^5,...2^0. Flags: from left to right: black, 90 degrees, 0 degrees, Heater, CAL, AUTO, range 2, and range, 1.",
          "Caveats": "This parameter is for the last sequence included in the 15.36 s statistical computation. For all data processed prior to 01/28/72 these quantities are for the sequence following the statistical computations.",
          "Support": {
            "SupportQuantity": "InstrumentMode"
          }
        },
        {
          "Name": "Orbit Number",
          "Description": "Orbit number of Explroer 43 from the beginning of the mission.",
          "Caveats": "This parameter is for the last sequence included in the 15.36 s statistical computation. For all data processed prior to 01/28/72 these quantities are for the sequence following the statistical computations.",
          "Support": {
            "SupportQuantity": "Other"
          }
        },
        {
          "Name": "Bit Rate Flag",
          "Description": "No description given.",
          "Caveats": "This parameter is for the last sequence included in the 15.36 s statistical computation. For all data processed prior to 01/28/72 these quantities are for the sequence following the statistical computations.",
          "Support": {
            "SupportQuantity": "Other"
          }
        },
        {
          "Name": "Pseudo Sequence Count",
          "Description": "No description given.",
          "Caveats": "This parameter is for the last sequence included in the 15.36 s statistical computation. For all data processed prior to 01/28/72 these quantities are for the sequence following the statistical computations.",
          "Support": {
            "SupportQuantity": "Other"
          }
        },
        {
          "Name": "Actually Satellite Clock from spacecraft",
          "Description": "No description given.",
          "Caveats": "This parameter is for the last sequence included in the 15.36 s statistical computation. For all data processed prior to 01/28/72 these quantities are for the sequence following the statistical computations.",
          "Support": {
            "SupportQuantity": "Temporal"
          }
        },
        {
          "Name": "House Keeping data",
          "Description": "No description given.",
          "Caveats": "This parameter is for the last sequence included in the 15.36 s statistical computation. For all data processed prior to 01/28/72 these quantities are for the sequence following the statistical computations.",
          "Support": {
            "SupportQuantity": "Other"
          }
        },
        {
          "Name": "Field Magnitude (F1)",
          "Description": "Averaged over 15.36 s. F1 = (1/N)*Sum to n of F_i where F_i is computed by the PAYAVG subroutine over 1.28 seconds. The PAYAVG subroutne was not available with the data or data descriptio.",
          "Units": "gamma",
          "Field": {
            "Qualifier": "Magnitude",
            "FieldQuantity": "Magnetic"
          }
        },
        {
          "Name": "Field Magnitude (F2)",
          "Description": "Averaged over 15.36 s. Fl = SQRT( ((1/N) ∑ X_i)^2 + ((1/N) ∑ Y_i)^2 + ((1/N) ∑ Z_i)^2 ) where X_i, Y_i, and Z_i are computed by the PAYAVG subroutine over 1.28 seconds. Sum from i=1 to N.",
          "Units": "gamma",
          "Field": {
            "Qualifier": "Magnitude",
            "FieldQuantity": "Magnetic"
          }
        },
        {
          "Name": "Theta",
          "Description": "Averaged over 15.36 s. Theta is sin^{-1}(Bz/B_manitude).",
          "Units": "degrees",
          "ValidMin": "-90",
          "ValidMax": "+90",
          "Field": {
            "Qualifier": "DirectionAngle.ElevationAngle",
            "FieldQuantity": "Magnetic"
          }
        },
        {
          "Name": "Phi",
          "Description": "Averaged over 15.36 s.",
          "Units": "degrees",
          "ValidMin": "0",
          "ValidMax": "360",
          "Field": {
            "Qualifier": "DirectionAngle.AzimuthAngle",
            "FieldQuantity": "Magnetic"
          }
        },
        {
          "Name": "Variance from Averages",
          "Description": "Variance matrix over 15.36 s. [Vxx,--,--;Vyx,Vyy,--;Vzx,Vzy,VZZ]. e.g., Vxx = ( (N ∑ X^{2}_{i}) - ∑ X_{i} ∑ X_{i} )/(N(N-1)). Vzy = ( (N ∑ Z_{i}Y_{i}) - ∑ Z_{i} ∑ Y_{i} )/(N(N-1)). Sum from i=1 to N.",
          "Structure": {
            "Size": "6",
            "Description": "Only includes 6 elements of the 3 by 3 matrix since three elements are repeated..",
            "Element": [
              {
                "Name": "Variance XX from averages.",
                "Index": "1",
                "ParameterKey": "Column_14",
                "Units": "gamma^2"
              },
              {
                "Name": "Variance YY from averages.",
                "Index": "2",
                "ParameterKey": "Column_15",
                "Units": "gamma^2"
              },
              {
                "Name": "Variance ZZ from averages.",
                "Index": "3",
                "ParameterKey": "Column_16",
                "Units": "gamma^2"
              },
              {
                "Name": "Variance YX from averages.",
                "Index": "1",
                "ParameterKey": "Column_17",
                "Units": "gamma^2"
              },
              {
                "Name": "Variance ZX from averages.",
                "Index": "1",
                "ParameterKey": "Column_18",
                "Units": "gamma^2"
              },
              {
                "Name": "Variance ZY from averages.",
                "Index": "1",
                "ParameterKey": "Column_19",
                "Units": "gamma^2"
              }
            ]
          },
          "Support": {
            "Qualifier": "Variance",
            "SupportQuantity": "Other"
          }
        },
        {
          "Name": "N",
          "Description": "Number of sequences over which statistics were comuted.",
          "Support": {
            "Qualifier": "Total",
            "SupportQuantity": "Other"
          }
        },
        {
          "Name": "ND",
          "Description": "Number of detail points over which statistics were comuted.",
          "Support": {
            "Qualifier": "Total",
            "SupportQuantity": "Other"
          }
        },
        {
          "Name": "Trajectory Day",
          "Description": "Jan 1 = 0.",
          "Units": "day",
          "Support": {
            "SupportQuantity": "Temporal"
          }
        },
        {
          "Name": "Trajectory Millisec of the Day",
          "Units": "millisec",
          "Support": {
            "SupportQuantity": "Temporal"
          }
        },
        {
          "Name": "Geomagnetic Latitude Satellite position",
          "Units": "degrees",
          "Support": {
            "Qualifier": "DirectionAngle.ElevationAngle",
            "SupportQuantity": "Positional"
          }
        },
        {
          "Name": "Geomagnetic Longitude Satellite position",
          "Units": "degrees",
          "Support": {
            "Qualifier": "DirectionAngle.AzimuthAngle",
            "SupportQuantity": "Positional"
          }
        },
        {
          "Name": "Geocentric Solar Ecliptic Satellite Position",
          "Description": "Location of the spacecraft in GSE coordinates in units of kilometers.",
          "CoordinateSystem": {
            "CoordinateRepresentation": "Cartesian",
            "CoordinateSystemName": "GSE"
          },
          "Structure": {
            "Size": "3",
            "Element": [
              {
                "Name": "X-GSE",
                "Index": "1",
                "ParameterKey": "Column_26",
                "Units": "km"
              },
              {
                "Name": "Y-GSE",
                "Index": "2",
                "ParameterKey": "Column_27",
                "Units": "km"
              },
              {
                "Name": "Z-GSE",
                "Index": "3",
                "ParameterKey": "Column_28",
                "Units": "km"
              }
            ]
          },
          "Support": {
            "SupportQuantity": "Positional"
          }
        },
        {
          "Name": "Radial Distance to Satellite from Earth's center",
          "Units": "km",
          "Support": {
            "Qualifier": "Magnitude",
            "SupportQuantity": "Positional"
          }
        },
        {
          "Name": "Geocentric Solar Magnetospheric Satellite Position",
          "Description": "Location of the spacecraft in GSM coordinates in units of kilometers.",
          "CoordinateSystem": {
            "CoordinateRepresentation": "Cartesian",
            "CoordinateSystemName": "GSM"
          },
          "Structure": {
            "Size": "2",
            "Element": [
              {
                "Name": "Y-GSM",
                "Index": "1",
                "ParameterKey": "Column_30",
                "Units": "km"
              },
              {
                "Name": "Z-GSE",
                "Index": "2",
                "ParameterKey": "Column_31",
                "Units": "km"
              }
            ]
          },
          "Support": {
            "SupportQuantity": "Positional"
          }
        },
        {
          "Name": "Geomagnetic Latitude Sun position",
          "Units": "degrees",
          "Support": {
            "Qualifier": "DirectionAngle.ElevationAngle",
            "SupportQuantity": "Positional"
          }
        },
        {
          "Name": "Geomagnetic Longitude Sun position",
          "Units": "degrees",
          "Support": {
            "Qualifier": "DirectionAngle.AzimuthAngle",
            "SupportQuantity": "Positional"
          }
        },
        {
          "Name": "Theoretical Geomagnetic Field Geocentric Solar Ecliptic",
          "Description": "Theoretical geomagnetic field but the magnetic field model is unclear.",
          "CoordinateSystem": {
            "CoordinateRepresentation": "Cartesian",
            "CoordinateSystemName": "GSE"
          },
          "Structure": {
            "Size": "3",
            "Element": [
              {
                "Name": "BX-GSE",
                "Index": "1",
                "ParameterKey": "Column_34",
                "Units": "gamma"
              },
              {
                "Name": "BY-GSE",
                "Index": "2",
                "ParameterKey": "Column_35",
                "Units": "gamma"
              },
              {
                "Name": "BZ-GSE",
                "Index": "3",
                "ParameterKey": "Column_36",
                "Units": "gamma"
              }
            ]
          },
          "Field": {
            "Qualifier": "Vector",
            "FieldQuantity": "Magnetic"
          }
        },
        {
          "Name": "Rotation Matrix",
          "Description": "Rotation matrix from GSE to GSM",
          "Structure": {
            "Size": "9",
            "Element": [
              {
                "Name": "1st row, 1st column",
                "Index": "1",
                "ParameterKey": "Column_37"
              },
              {
                "Name": "1st row, 2nd column",
                "Index": "2",
                "ParameterKey": "Column_38"
              },
              {
                "Name": "1st row, 3rd column",
                "Index": "3",
                "ParameterKey": "Column_39"
              },
              {
                "Name": "2nd row, 1st column",
                "Index": "4",
                "ParameterKey": "Column_40"
              },
              {
                "Name": "2nd row, 2nd column",
                "Index": "5",
                "ParameterKey": "Column_41"
              },
              {
                "Name": "2nd row, 3rd column",
                "Index": "6",
                "ParameterKey": "Column_42"
              },
              {
                "Name": "3rd row, 1st column",
                "Index": "7",
                "ParameterKey": "Column_43"
              },
              {
                "Name": "3rd row, 2nd column",
                "Index": "8",
                "ParameterKey": "Column_44"
              },
              {
                "Name": "3rd row, 3rd column",
                "Index": "9",
                "ParameterKey": "Column_45"
              }
            ]
          },
          "Support": {
            "Qualifier": "Array",
            "SupportQuantity": "Other"
          }
        },
        {
          "Name": "Rotation Matrix",
          "Description": "Rotation matrix from celestial inertial to GSE",
          "Structure": {
            "Size": "9",
            "Element": [
              {
                "Name": "1st row, 1st column",
                "Index": "1",
                "ParameterKey": "Column_46"
              },
              {
                "Name": "1st row, 2nd column",
                "Index": "2",
                "ParameterKey": "Column_47"
              },
              {
                "Name": "1st row, 3rd column",
                "Index": "3",
                "ParameterKey": "Column_48"
              },
              {
                "Name": "2nd row, 1st column",
                "Index": "4",
                "ParameterKey": "Column_49"
              },
              {
                "Name": "2nd row, 2nd column",
                "Index": "5",
                "ParameterKey": "Column_50"
              },
              {
                "Name": "2nd row, 3rd column",
                "Index": "6",
                "ParameterKey": "Column_51"
              },
              {
                "Name": "3rd row, 1st column",
                "Index": "7",
                "ParameterKey": "Column_52"
              },
              {
                "Name": "3rd row, 2nd column",
                "Index": "8",
                "ParameterKey": "Column_53"
              },
              {
                "Name": "3rd row, 3rd column",
                "Index": "9",
                "ParameterKey": "Column_54"
              }
            ]
          },
          "Support": {
            "Qualifier": "Array",
            "SupportQuantity": "Other"
          }
        },
        {
          "Name": "Geocentric Latitude Satellite Position",
          "Units": "degrees",
          "Support": {
            "Qualifier": "DirectionAngle.ElevationAngle",
            "SupportQuantity": "Positional"
          }
        },
        {
          "Name": "Geocentric Longitude Satellite Position",
          "Units": "degrees",
          "Support": {
            "Qualifier": "DirectionAngle.AzimuthAngle",
            "SupportQuantity": "Positional"
          }
        },
        {
          "Name": "Right Ascension",
          "Description": "Not clear what this is the right ascension of. Celestial Equatorial Coordinate System?",
          "Units": "degrees",
          "Support": {
            "Qualifier": "DirectionAngle.AzimuthAngle",
            "SupportQuantity": "Positional"
          }
        },
        {
          "Name": "Declination",
          "Description": "Not clear what this is the right ascension of. Celestial Equatorial Coordinate System?",
          "Units": "degrees",
          "Support": {
            "Qualifier": "DirectionAngle.ElevationAngle",
            "SupportQuantity": "Positional"
          }
        },
        {
          "Name": "Theta Solar Ecliptic",
          "Units": "degrees",
          "Support": {
            "Qualifier": "DirectionAngle.ElevationAngle",
            "SupportQuantity": "Positional"
          }
        },
        {
          "Name": "Theta Solar Magnetic",
          "Units": "degrees",
          "Support": {
            "Qualifier": "DirectionAngle.ElevationAngle",
            "SupportQuantity": "Positional"
          }
        },
        {
          "Name": "Phi Solar Ecliptic",
          "Units": "degrees",
          "Support": {
            "Qualifier": "DirectionAngle.AzimuthAngle",
            "SupportQuantity": "Positional"
          }
        },
        {
          "Name": "Phi Solar Magnetic",
          "Units": "degrees",
          "Support": {
            "Qualifier": "DirectionAngle.AzimuthAngle",
            "SupportQuantity": "Positional"
          }
        },
        {
          "Name": "Magnetic Field Vector Solar Ecliptic",
          "CoordinateSystem": {
            "CoordinateRepresentation": "Cartesian",
            "CoordinateSystemName": "SE"
          },
          "Structure": {
            "Size": "3",
            "Element": [
              {
                "Name": "BX-SE",
                "Index": "1",
                "ParameterKey": "Column_63",
                "Units": "gamma"
              },
              {
                "Name": "BY-SE",
                "Index": "2",
                "ParameterKey": "Column_64",
                "Units": "gamma"
              },
              {
                "Name": "BZ-SE",
                "Index": "3",
                "ParameterKey": "Column_65",
                "Units": "gamma"
              }
            ]
          },
          "Field": {
            "Qualifier": "Vector",
            "FieldQuantity": "Magnetic"
          }
        },
        {
          "Name": "Magnetic Field Vector Solar Magnetic",
          "CoordinateSystem": {
            "CoordinateRepresentation": "Cartesian",
            "CoordinateSystemName": "SM"
          },
          "Structure": {
            "Size": "3",
            "Element": [
              {
                "Name": "BX-SM",
                "Index": "1",
                "ParameterKey": "Column_66",
                "Units": "gamma"
              },
              {
                "Name": "BY-SM",
                "Index": "2",
                "ParameterKey": "Column_67",
                "Units": "gamma"
              },
              {
                "Name": "BZ-SM",
                "Index": "3",
                "ParameterKey": "Column_68",
                "Units": "gamma"
              }
            ]
          },
          "Field": {
            "Qualifier": "Vector",
            "FieldQuantity": "Magnetic"
          }
        }
      ]
    }
  }
}