{
  "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/wi_l3-dustimpact_waves_00000000_v01.json (from all.xml)",
    "NumericalData": {
      "ResourceID": "spase://NASA/NumericalData/Wind/WAVES/DustImpact/PT1S",
      "_ResourceID": "Source: https://github.com/rweigel/cdawmeta-spase/blob/main/ResourceID.json",
      "ResourceHeader": {
        "ResourceName": "The Radio and Plasma Wave Investigation on the Wind Spacecraft",
        "_ResourceName": "Source: Master/CDFglobalAttributes/Logical_source_description",
        "AlternateName": "wind_l3-dustimpact_waves",
        "_AlternateName": "Source: Master/CDFglobalAttributes/Logical_source",
        "Description": "Wind WAVES Time Domain Sampler (TDS) Dust Data File                 References:                                                         1)  Bougeret, J.-L., et al. `WAVES:  The Radio and Plasma Wave          Investigation on the Wind Spacecraft,` Space Sci. Rev. Vol. 71,     pp. 231-263, doi:10.1007/BF00751331, (1995).                    2)  Malaspina, D.M., M. Horanyi, A. Zaslavsky, K. Goetz,                L.B. Wilson III, and K. Kersten `Interplanetary and interstellar    dust observed by the Wind/WAVES electric field instrument,`         Geophys. Res. Lett. Vol. 41, pp. 266-272,                           doi:10.1002/2013GL058786, (2014).                               3)  Malaspina, D.M., and L.B. Wilson III `A Database of                 Interplanetary and Interstellar Dust Detected by the Wind           Spacecraft, J. Geophys. Res., doi:10.1002/2016JA023209, (2016).",
        "_Description": "Source: Master/CDFglobalAttributes/TEXT",
        "Acknowledgement": "We would like to thank the Wind/WAVES team, especially Keith Goetz, Paul J. Kellogg, Kris Kersten, and Josh Lynch for their support with data retrieval and calibration.",
        "_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": [
          {
            "URL": "http://onlinelibrary.wiley.com/doi/10.1002/2016JA023209/pdf",
            "Name": "Wind Dust Database ",
            "Description": "JGR article.",
            "_Note": "URL also in all.xml. Using master."
          },
          {
            "Name": "The Wind Dust Database",
            "URL": "https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1002/2016JA023209",
            "Description": "The Wind Database of Interplanetary and Interstellar Dust Events, JGR Article",
            "_Note": "Source: InformationURL.json"
          }
        ]
      },
      "ProviderResourceName": "Wind WAVES Time Domain Sampler (TDS) Dust Impact Database",
      "Caveats": "Please cite/reference the Wind/WAVES paper by J.-L. Bougeret et al., [1995] in Space Science Reviews and work by Malaspina et al., [2014] in Geophysical Research Letters (doi:10.1002/2013GL058786).  We would also appreciate a reference to the Wind dust impact database paper:  Malaspina et al. [2016], in Journal of Geophysical Research (doi:10.1002/2016JA023209).",
      "_Caveats": "Source: Master/CDFglobalAttributes/Rules_of_use",
      "DOI": "https://doi.org/10.48322/635a-nc73",
      "_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: D.M. Malaspina at U. Colorado at Boulder, LASP",
          "Format": [
            "CDF"
          ],
          "Style": "Listing",
          "AccessURL": {
            "Name": "HTTPS from SPDF",
            "URL": "https://cdaweb.gsfc.nasa.gov/pub/data/wind/waves/dust_impact_l3",
            "Description": "In CDF via HTTP from CDAWeb",
            "AccessFilenameTemplate": "wi_l3-dustimpact_waves_%Y%m%d_%Q.cdf",
            "AccessDirectoryTemplate": "%Y",
            "ProductKey": "WI_L3-DUSTIMPACT_WAVES"
          }
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "Acknowledgement": "SPDF/CDAWeb. Please also acknowledge the data producer: D.M. Malaspina at U. Colorado at Boulder, LASP",
          "Format": [
            "CDF"
          ],
          "Style": "Listing",
          "AccessURL": {
            "Name": "FTPS from SPDF",
            "URL": "ftps://cdaweb.gsfc.nasa.gov/pub/data/wind/waves/dust_impact_l3",
            "Description": "In CDF via HTTP from CDAWeb",
            "AccessFilenameTemplate": "wi_l3-dustimpact_waves_%Y%m%d_%Q.cdf",
            "AccessDirectoryTemplate": "%Y",
            "ProductKey": "WI_L3-DUSTIMPACT_WAVES"
          }
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "Acknowledgement": "SPDF/CDAWeb. Please also acknowledge the data producer: D.M. Malaspina at U. Colorado at Boulder, LASP",
          "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": "WI_L3-DUSTIMPACT_WAVES"
          }
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "Acknowledgement": "SPDF/CDAWeb. Please also acknowledge the data producer: D.M. Malaspina at U. Colorado at Boulder, LASP",
          "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=WI_L3-DUSTIMPACT_WAVES",
            "Style": "WebService",
            "ProductKey": "WI_L3-DUSTIMPACT_WAVES",
            "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: D.M. Malaspina at U. Colorado at Boulder, LASP",
          "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/WI_L3-DUSTIMPACT_WAVES/clientLibraryExample/",
            "ProductKey": "WI_L3-DUSTIMPACT_WAVES",
            "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: D.M. Malaspina at U. Colorado at Boulder, LASP",
          "Format": [
            "HTML"
          ],
          "AccessURL": {
            "Name": "4D Orbit Viewer",
            "URL": "https://sscweb.gsfc.nasa.gov/4dorbit/?sc=WI_L3-DUSTIMPACT_WAVES",
            "ProductKey": "WI_L3-DUSTIMPACT_WAVES",
            "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: D.M. Malaspina at U. Colorado at Boulder, LASP",
          "Format": [
            "CSV",
            "JSON",
            "Binary"
          ],
          "AccessURL": {
            "Name": "CDAWeb HAPI Server",
            "URL": "https://hapi-server.org/servers/#server=CDAWeb&dataset=WI_L3-DUSTIMPACT_WAVES",
            "Style": "HAPI",
            "ProductKey": "WI_L3-DUSTIMPACT_WAVES",
            "Description": "Web Service to this product using the HAPI interface."
          }
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "Acknowledgement": "SPDF/CDAWeb and the HAPI project. Please also acknowledge the data producer: D.M. Malaspina at U. Colorado at Boulder, LASP",
          "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=WI_L3-DUSTIMPACT_WAVES&return=script",
            "Style": "HAPI",
            "ProductKey": "WI_L3-DUSTIMPACT_WAVES",
            "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."
          }
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "Acknowledgement": "SPDF/CDAWeb and the HAPI project. Please also acknowledge the data producer: D.M. Malaspina at U. Colorado at Boulder, LASP",
          "Format": [
            "PNG",
            "PDF",
            "SVG"
          ],
          "AccessURL": {
            "Name": "HAPI visualizations",
            "URL": "https://hapi-server.org/plot/?server=https://cdaweb.gsfc.nasa.gov/hapi&dataset=WI_L3-DUSTIMPACT_WAVES&format=gallery",
            "Style": "x_Visualization",
            "ProductKey": "WI_L3-DUSTIMPACT_WAVES",
            "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": "1995-01-01T00:00:00Z",
          "StopDate": "2023-09-01T00:00:00Z"
        },
        "_TemporalDescription": "Generated from all.xml/@timerange_start and all.xml/@timerange_stop"
      },
      "Keyword": [
        "Wind Interplanetary Plasma Laboratory (from all.xml/observatory/description/@short)",
        "Time Domain Sampler (TDS) Fast Receiver (from all.xml/instrument/description/@short)",
        "Space Physics (from Master/CDFglobalAttributes/Discipline)",
        "Heliospheric Science (from Master/CDFglobalAttributes/Discipline)",
        "WIND (from Master/CDFglobalAttributes/Source_name)",
        "Wind Interplanetary Plasma Laboratory (from Master/CDFglobalAttributes/Source_name)",
        "L3 (from Master/CDFglobalAttributes/Data_type)",
        "Dust Impact Information from WAVES TDS (from Master/CDFglobalAttributes/Data_type)",
        "WAVES (from all.xml/instrument/@ID)"
      ],
      "ObservedRegion": [
        "Earth.Magnetosphere.Magnetotail",
        "Earth.Magnetosphere",
        "Earth.Magnetosheath",
        "Earth.NearSurface.AuroralRegion",
        "Earth.Magnetosphere.Main",
        "Heliosphere.NearEarth",
        "Earth.NearSurface.Plasmasphere",
        "Heliosphere.Inner",
        "Earth.NearSurface.PolarCap",
        "Heliosphere"
      ],
      "_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": "spase://SMWG/Instrument/Wind/WAVES",
      "MeasurementType": "ElectricField",
      "Parameter2": [
        {
          "Name": "Epoch",
          "ParameterKey": "EPOCH",
          "Description": "CATDESC: 'Epoch (TT2000) time at start of TDS event'. 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.'",
          "Units": "ns",
          "Support": {
            "Qualifier": "Scalar",
            "SupportQuantity": "Temporal"
          }
        },
        {
          "Name": "TDS event number",
          "ParameterKey": "TDS_Event_Number",
          "Description": "Master CDF CATDESC: 'TDS event number identifier for each dust impact'. Master CDF VAR_NOTES: 'The TDS event number is a unique long integer that identifies one event from another.  The counter rolls over, so the date and event number are required for waveform identification.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is EPOCH.'",
          "Units": " ",
          "FillValue": -1
        },
        {
          "Name": "TDS duration",
          "ParameterKey": "TDS_Event_Duration",
          "Description": "Master CDF CATDESC: 'Duration (seconds) of each TDS event'. Master CDF VAR_NOTES: 'The total duration of each TDSF event in seconds.  A single TDSF event is defined as a snapshot of two electric field components with the same event number occurring on the same date.  Most TDSF events were sampled at 120000 samples per second, thus will have durations of roughly 17 milliseconds.  However, the longest duration events can last upwards of ~1 second.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is EPOCH.'",
          "Units": "s",
          "FillValue": -1e+31
        },
        {
          "Name": "SC spin rate",
          "ParameterKey": "Wind_Spin_Rate",
          "Description": "Master CDF CATDESC: 'Spacecraft spin rate'. Master CDF VAR_NOTES: 'The spacecraft (SC) spin rate [deg/s] was determined using the known event duration and angle subtended during each TDS event.  This value is accurate to << 1 degree, where the uncertainties arise from the onboard sample rate clock of the TDS receiver and sun pulse detector time accuracy.  The spin period [s] was then determined using 360 degrees divided by the spin rate value.  Both values assume that the spin rate/period is constant during the TDS event, which should be an accurate assumption for nearly all events.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is EPOCH.'",
          "Units": "degrees/s",
          "FillValue": -1e+31
        },
        {
          "Name": "SC spin period",
          "ParameterKey": "Wind_Spin_Period",
          "Description": "Master CDF CATDESC: 'Spacecraft spin period'. Master CDF VAR_NOTES: 'The spacecraft (SC) spin rate [deg/s] was determined using the known event duration and angle subtended during each TDS event.  This value is accurate to << 1 degree, where the uncertainties arise from the onboard sample rate clock of the TDS receiver and sun pulse detector time accuracy.  The spin period [s] was then determined using 360 degrees divided by the spin rate value.  Both values assume that the spin rate/period is constant during the TDS event, which should be an accurate assumption for nearly all events.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is EPOCH.'",
          "Units": "s",
          "FillValue": -1e+31
        },
        {
          "Name": "Peak Ch 1 amplitude",
          "ParameterKey": "Ch01___Peak_amplitude",
          "Description": "Master CDF CATDESC: 'Peak amplitude (mV) on Ch 1'. Master CDF VAR_NOTES: 'The peak amplitude of the electric field component from the dust impact.  This is the peak amplitude measured during a TDSF event on both antenna.  This is a signed (i.e., +/-) value.  The X-antenna was first cut on August 3, 2000.  It was cut again on September 24, 2002.  Currently, the effective antenna lengths used are 41.1 m, 3.79 m, and 2.17 m for the X-, Y-, and Z-antenna, respectively, for all dust impacts.  We have removed these antenna length dependencies, which is why the amplitude units are in mV.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is EPOCH.'",
          "Units": "mV",
          "FillValue": -1e+31
        },
        {
          "Name": "Ch 1 CC value",
          "ParameterKey": "Ch01___cc_value",
          "Description": "Master CDF CATDESC: 'Value of cross-correlation on Ch 1'. Master CDF VAR_NOTES: 'The cross-correlation value between Ch 1 waveform and the normalized median waveform of a given morphological type [e.g., see Malaspina  and Wilson, (2016) for morphological type definitions].'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is EPOCH.'",
          "Units": " ",
          "FillValue": -1e+31
        },
        {
          "Name": "Ch 1 CC threshold value",
          "ParameterKey": "Ch01___cc_threshold",
          "Description": "Master CDF CATDESC: 'Threshold value allowed for cross-correlation on Ch 1'. Master CDF VAR_NOTES: 'The cross-correlation threshold value for the Ch 1 waveform used.  The overall cross-correlation threshold is 0.8 but morphological types C, D, and M are required to exceed 0.9.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is EPOCH.'",
          "Units": " ",
          "FillValue": -1e+31
        },
        {
          "Name": "Ch 1 Min. threshold",
          "ParameterKey": "MinCh1_threshold",
          "Description": "Master CDF CATDESC: 'Event selection threshold amplitude (mV) on Ch 1'. Master CDF VAR_NOTES: 'The minimum Ch 1 absolute amplitude required for event selection.  The X-antenna was first cut on August 3, 2000.  It was cut again on September 24, 2002.  Currently, the effective antenna lengths used are 41.1 m, 3.79 m, and 2.17 m for the X-, Y-, and Z-antenna, respectively, for all dust impacts.  We have removed these antenna length dependencies, which is why the amplitude units are in mV.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is EPOCH.'",
          "Units": "mV",
          "FillValue": -1e+31
        },
        {
          "Name": "Ex Impact Ant. angle",
          "ParameterKey": "Ch1ImpAnt_E_S_Angle",
          "Description": "Master CDF CATDESC: 'Avg. clockwise angle (degrees) of closest Ex antenna (to dust impact on spacecraft bus) from Earth-sun line (i.e., roughly +X-GSE)'. Master CDF VAR_NOTES: 'The angle accounts for the XY-GSE displacement of Wind but assumes Earth remains at exactly 1 AU always.  The error introduced by not including the change of the Earth's radial position throughout its annual orbit is less than ~0.017 degrees.  The error introduced by not including the change of the spacecraft's out-of-ecliptic displacement is less than ~0.0018 degrees.  The spacecraft (SC) spin axis is aligned within ~0.8 degrees of the south ecliptic pole.  This varies annually due to the differences in torque applied to the SC bus by solar radiation.  The angle can be as low as < 0.1 degrees.We define clockwise (CW) angles as being < 0 for CW rotations to remain consistent with Euler angle notation.  We define CW as viewed from the north ecliptic pole looking down upon the XY-GSE plane.  All angles herein vary from 0 to 360 degrees (absolute values), thus a positive counter-clockwise angle corresponds to [(clockwise angle) + 360] > 0.  The impact antenna angle depends upon the closest impact antenna, defined by the CDF variables Ch01___ImpactAntenna and Ch02___ImpactAntenna.  An example image illustrating the various angles within these CDF files can be found in the Malaspina and Wilson, [2016] (doi:10.1002/2016JA023209)'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is EPOCH.'",
          "Units": "degrees",
          "FillValue": -1e+31
        },
        {
          "Name": "Peak Ch 2 amplitude",
          "ParameterKey": "Ch02___Peak_amplitude",
          "Description": "Master CDF CATDESC: 'Peak amplitude (mV) on Ch 2'. Master CDF VAR_NOTES: 'The peak amplitude of the electric field component from the dust impact.  This is the peak amplitude measured during a TDSF event on both antenna.  This is a signed (i.e., +/-) value.  The X-antenna was first cut on August 3, 2000.  It was cut again on September 24, 2002.  Currently, the effective antenna lengths used are 41.1 m, 3.79 m, and 2.17 m for the X-, Y-, and Z-antenna, respectively, for all dust impacts.  We have removed these antenna length dependencies, which is why the amplitude units are in mV.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is EPOCH.'",
          "Units": "mV",
          "FillValue": -1e+31
        },
        {
          "Name": "Ch 2 CC value",
          "ParameterKey": "Ch02___cc_value",
          "Description": "Master CDF CATDESC: 'Value of cross-correlation on Ch 2'. Master CDF VAR_NOTES: 'The cross-correlation value between Ey waveform and the normalized median waveform of a given morphological type.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is EPOCH.'",
          "Units": " ",
          "FillValue": -1e+31
        },
        {
          "Name": "Ch 2 CC threshold value",
          "ParameterKey": "Ch02___cc_threshold",
          "Description": "Master CDF CATDESC: 'Threshold value allowed for cross-correlation on Ch 2'. Master CDF VAR_NOTES: 'The cross-correlation threshold value for the Ch 2 waveform used.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is EPOCH.'",
          "Units": " ",
          "FillValue": -1e+31
        },
        {
          "Name": "Ch 2 Min. threshold",
          "ParameterKey": "MinCh2_threshold",
          "Description": "Master CDF CATDESC: 'Event selection threshold amplitude (mV) on Ch 2'. Master CDF VAR_NOTES: 'The minimum Ch 2 absolute amplitude required for event selection.  The X-antenna was first cut on August 3, 2000.  It was cut again on September 24, 2002.  Currently, the effective antenna lengths used are 41.1 m, 3.79 m, and 2.17 m for the X-, Y-, and Z-antenna, respectively, for all dust impacts.  We have removed these antenna length dependencies, which is why the amplitude units are in mV.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is EPOCH.'",
          "Units": "mV",
          "FillValue": -1e+31
        },
        {
          "Name": "Ey Impact Ant. angle",
          "ParameterKey": "Ch2ImpAnt_E_S_Angle",
          "Description": "Master CDF CATDESC: 'Avg. clockwise angle (degrees) of closest Ey antenna (to dust impact on spacecraft bus) from Earth-sun line (i.e., roughly +X-GSE)'. Master CDF VAR_NOTES: 'The angle accounts for the XY-GSE displacement of Wind but assumes Earth remains at exactly 1 AU always.  The error introduced by not including the change of the Earth's radial position throughout its annual orbit is less than ~0.017 degrees.  The error introduced by not including the change of the spacecraft's out-of-ecliptic displacement is less than ~0.0018 degrees.  The spacecraft (SC) spin axis is aligned within ~0.8 degrees of the south ecliptic pole.  This varies annually due to the differences in torque applied to the SC bus by solar radiation.  The angle can be as low as < 0.1 degrees.We define clockwise (CW) angles as being < 0 for CW rotations to remain consistent with Euler angle notation.  We define CW as viewed from the north ecliptic pole looking down upon the XY-GSE plane.  All angles herein vary from 0 to 360 degrees (absolute values), thus a positive counter-clockwise angle corresponds to [(clockwise angle) + 360] > 0.  The impact antenna angle depends upon the closest impact antenna, defined by the CDF variables Ch01___ImpactAntenna and Ch02___ImpactAntenna.  An example image illustrating the various angles within these CDF files can be found in the Malaspina and Wilson, [2016] (doi:10.1002/2016JA023209)'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is EPOCH.'",
          "Units": "degrees",
          "FillValue": -1e+31
        },
        {
          "Name": "+Ex angle from spacecraft-sun line",
          "ParameterKey": "Pos_Ax_SCS_Angle",
          "Description": "Master CDF CATDESC: 'Avg. clockwise angle (degrees) of +Ex antenna from spacecraft-sun line'. Master CDF VAR_NOTES: 'The angle accounts for the XY-GSE displacement of Wind but assumes Earth remains at exactly 1 AU always.  The error introduced by not including the change of the Earth's radial position throughout its annual orbit is less than ~0.017 degrees.  The error introduced by not including the change of the spacecraft's out-of-ecliptic displacement is less than ~0.0018 degrees.  The spacecraft (SC) spin axis is aligned within ~0.8 degrees of the south ecliptic pole.  This varies annually due to the differences in torque applied to the SC bus by solar radiation.  The angle can be as low as < 0.1 degrees.We define clockwise (CW) angles as being < 0 for CW rotations to remain consistent with Euler angle notation.  We define CW as viewed from the north ecliptic pole looking down upon the XY-GSE plane.  All angles herein vary from 0 to 360 degrees (absolute values), thus a positive counter-clockwise angle corresponds to [(clockwise angle) + 360] > 0.  The impact antenna angle depends upon the closest impact antenna, defined by the CDF variables Ch01___ImpactAntenna and Ch02___ImpactAntenna.  An example image illustrating the various angles within these CDF files can be found in the Malaspina and Wilson, [2016] (doi:10.1002/2016JA023209)'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is EPOCH.'",
          "Units": "degrees",
          "FillValue": -1e+31
        },
        {
          "Name": "+Ex angle from Earth-sun line",
          "ParameterKey": "Pos_Ax_E_S_Angle",
          "Description": "Master CDF CATDESC: 'Avg. clockwise angle (degrees) of +Ex antenna from Earth-sun line (i.e., roughly +X-GSE)'. Master CDF VAR_NOTES: 'The angle accounts for the XY-GSE displacement of Wind but assumes Earth remains at exactly 1 AU always.  The error introduced by not including the change of the Earth's radial position throughout its annual orbit is less than ~0.017 degrees.  The error introduced by not including the change of the spacecraft's out-of-ecliptic displacement is less than ~0.0018 degrees.  The spacecraft (SC) spin axis is aligned within ~0.8 degrees of the south ecliptic pole.  This varies annually due to the differences in torque applied to the SC bus by solar radiation.  The angle can be as low as < 0.1 degrees.We define clockwise (CW) angles as being < 0 for CW rotations to remain consistent with Euler angle notation.  We define CW as viewed from the north ecliptic pole looking down upon the XY-GSE plane.  All angles herein vary from 0 to 360 degrees (absolute values), thus a positive counter-clockwise angle corresponds to [(clockwise angle) + 360] > 0.  The impact antenna angle depends upon the closest impact antenna, defined by the CDF variables Ch01___ImpactAntenna and Ch02___ImpactAntenna.  An example image illustrating the various angles within these CDF files can be found in the Malaspina and Wilson, [2016] (doi:10.1002/2016JA023209)'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is EPOCH.'",
          "Units": "degrees",
          "FillValue": -1e+31
        },
        {
          "Name": "+Ey angle from Earth-sun line",
          "ParameterKey": "Pos_Ay_E_S_Angle",
          "Description": "Master CDF CATDESC: 'Avg. clockwise angle (degrees) of +Ey antenna from Earth-sun line (i.e., roughly +X-GSE)'. Master CDF VAR_NOTES: 'The angle accounts for the XY-GSE displacement of Wind but assumes Earth remains at exactly 1 AU always.  The error introduced by not including the change of the Earth's radial position throughout its annual orbit is less than ~0.017 degrees.  The error introduced by not including the change of the spacecraft's out-of-ecliptic displacement is less than ~0.0018 degrees.  The spacecraft (SC) spin axis is aligned within ~0.8 degrees of the south ecliptic pole.  This varies annually due to the differences in torque applied to the SC bus by solar radiation.  The angle can be as low as < 0.1 degrees.We define clockwise (CW) angles as being < 0 for CW rotations to remain consistent with Euler angle notation.  We define CW as viewed from the north ecliptic pole looking down upon the XY-GSE plane.  All angles herein vary from 0 to 360 degrees (absolute values), thus a positive counter-clockwise angle corresponds to [(clockwise angle) + 360] > 0.  The impact antenna angle depends upon the closest impact antenna, defined by the CDF variables Ch01___ImpactAntenna and Ch02___ImpactAntenna.  An example image illustrating the various angles within these CDF files can be found in the Malaspina and Wilson, [2016] (doi:10.1002/2016JA023209)'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is EPOCH.'",
          "Units": "degrees",
          "FillValue": -1e+31
        },
        {
          "Name": "Uncertainty in Pos_Ax_E_S_Angle",
          "ParameterKey": "Pos_Ax_E_S_Delta_Angle",
          "Description": "Master CDF CATDESC: 'Uncertainty in Pos_Ax_E_S_Angle'. Master CDF VAR_NOTES: 'The angle accounts for the XY-GSE displacement of Wind but assumes Earth remains at exactly 1 AU always.  The error introduced by not including the change of the Earth's radial position throughout its annual orbit is less than ~0.017 degrees.  The error introduced by not including the change of the spacecraft's out-of-ecliptic displacement is less than ~0.0018 degrees.  The spacecraft (SC) spin axis is aligned within ~0.8 degrees of the south ecliptic pole.  This varies annually due to the differences in torque applied to the SC bus by solar radiation.  The angle can be as low as < 0.1 degrees.We define clockwise (CW) angles as being < 0 for CW rotations to remain consistent with Euler angle notation.  We define CW as viewed from the north ecliptic pole looking down upon the XY-GSE plane.  All angles herein vary from 0 to 360 degrees (absolute values), thus a positive counter-clockwise angle corresponds to [(clockwise angle) + 360] > 0.  The impact antenna angle depends upon the closest impact antenna, defined by the CDF variables Ch01___ImpactAntenna and Ch02___ImpactAntenna.  An example image illustrating the various angles within these CDF files can be found in the Malaspina and Wilson, [2016] (doi:10.1002/2016JA023209)'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is EPOCH.'",
          "Units": "degrees",
          "FillValue": -1e+31
        },
        {
          "Name": "Uncertainty in ImpAnt_E_S_Angle",
          "ParameterKey": "ImpAnt_E_S_Delta_Angle",
          "Description": "Master CDF CATDESC: 'Uncertainty in E[x,y]_ImpAnt_E_S_Angle'. Master CDF VAR_NOTES: 'The impact angle uncertainties are mostly controlled by the quadrant or hemisphere in which the dust impact occurred.  This is true for the Ch1ImpAnt_E_S_Angle and Ch2ImpAnt_E_S_Angle.  This is roughly +/- 45 degrees (i.e., quadrant) for all events.  For the other sun angles (i.e., Pos_Ax_SCS_Angle, Pos_Ax_E_S_Angle, and Pos_Ay_E_S_Angle), the uncertainty is controlled by the spin rate of the spacecraft (determined by event duration and angle subtended during an event) multiplied by the TDSF event duration plus the DPU clock latency uncertainty (i.e., ~10.6 ms).  Thus, this uncertainty is currently < 13 degrees (i.e., worst case scenario for fastest spin rate and slowest sampling rate).  In the best case scenario (i.e., most events), the uncertainties drop to ~3 degrees.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is EPOCH.'",
          "Units": "degrees",
          "FillValue": -1e+31
        }
      ]
    }
  }
}