{ "startDate": "1981-09-16T05:21:48Z", "stopDate": "1984-06-28T20:35:55Z", "sampleStartDate": "1984-06-27T03:05:31Z", "sampleStopDate": "1984-06-27T23:26:19Z", "cadence": "PT32S", "x_cadence_fraction": 0.9545454545454546, "x_cadence_note": "Counts based on variable 'Epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/de/de1/waves_pwi/sfc-spectra_cdaweb/1981/de1_pwi_sfc-spectra_19810916_v01.cdf. The most common cadence, 32000000000 [ns] = PT32S, occurred for 95.4545% of the 1008 timesteps. ", "maxRequestDuration": "PT61040M", "resourceURL": "https://cdaweb.gsfc.nasa.gov/misc/NotesD.html#DE1_PWI_SFC-SPECTRA", "contact": "Donald Gurnett @ University Iowa", "resourceID": "https://doi.org/10.48322/cb14-a164", "additionalMetadata": { "name": "SPASE", "contentURL": "https://spase-metadata.org/NASA/NumericalData/DE1/PWI/SFC/PT0.25S.html" }, "parameters": [ { "name": "Time", "type": "isotime", "units": "UTC", "length": 30, "fill": null, "x_description": "Event time for the start of the sweep", "x_cdf_NAME": "Epoch", "x_cdf_DataType": "CDF_TIME_TT2000" }, { "name": "Ex_Spectra_Reorder", "type": "double", "x_cdf_DataType": "CDF_REAL4", "description": "Spin Plane E-Field (SFC Ex) Spectra, 200 meter antenna, 104 Hz to 409 kHz [data monotonically sorted based on dependencies]", "fill": "-1.0", "units": "V**2 m**-2 Hz**-1", "x_label": "SFC Ex", "x_format": ".3e", "x_fractionDigits": "3", "x_cdf_FORMAT": "E9.3", "x_cdf_FIELDNAM": "SFC Ex Spectra", "x_cdf_VIRTUAL": "true", 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334.35, 334.35, 334.35, 334.35, 3014.8, 3014.8, 3014.8, 3014.8, 21949, 21949, 21949, 21949, 175500, 175500, 175500, 175500, 355.78, 355.78, 355.78, 355.78, 3186.2, 3186.2, 3186.2, 3186.2, 23320, 23320, 23320, 23320, 186470, 186470, 186470, 186470, 377.6, 377.6, 377.6, 377.6, 3360.8, 3360.8, 3360.8, 3360.8, 24716, 24716, 24716, 24716, 197640, 197640, 197640, 197640, 399.83, 399.83, 399.83, 399.83, 3538.6, 3538.6, 3538.6, 3538.6, 26139, 26139, 26139, 26139, 209020, 209020, 209020, 209020, 433.97, 433.97, 433.97, 433.97, 3811.7, 3811.7, 3811.7, 3811.7, 28324, 28324, 28324, 28324, 226500, 226500, 226500, 226500, 457.28, 457.28, 457.28, 457.28, 3998.2, 3998.2, 3998.2, 3998.2, 29816, 29816, 29816, 29816, 238430, 238430, 238430, 238430, 493.09, 493.09, 493.09, 493.09, 4284.7, 4284.7, 4284.7, 4284.7, 32108, 32108, 32108, 32108, 256770, 256770, 256770, 256770, 517.55, 517.55, 517.55, 517.55, 4480.4, 4480.4, 4480.4, 4480.4, 33673, 33673, 33673, 33673, 269300, 269300, 269300, 269300, 555.17, 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"-1.0", "units": "V**2 m**-2 Hz**-1", "x_label": "SFC Ez", "x_format": ".3e", "x_fractionDigits": "3", "x_cdf_FORMAT": "E9.3", "x_cdf_FIELDNAM": "SFC Ez Spectra", "x_cdf_VIRTUAL": "true", "x_cdf_FUNCT": "reorder_data", "x_cdf_COMPONENTS": [ "Ez_Spectra", "Frequencies" ], "x_cdf_DISPLAY_TYPE": "default_dimension", "x_cdf_DEPEND_0": "Epoch", "size": [ 512 ] }, { "name": "Ez_Spectra", "type": "double", "x_cdf_DataType": "CDF_REAL4", "description": "[CDAWEB PLOTS NOT SUPPORTED] Spin Axis E-Field (SFC Ez) Spectra, 8 meter antenna, 104 Hz to 409 kHz", "fill": "-1.0", "units": "V**2 m**-2 Hz**-1", "x_label": "SFC Ez", "x_format": ".3e", "x_fractionDigits": "3", "x_cdf_FORMAT": "E9.3", "x_cdf_FIELDNAM": "SFC Ez Spectra", "x_cdf_DISPLAY_TYPE": "default_dimension", "x_cdf_DEPEND_0": "Epoch", "size": [ 512 ], "bins": [ { "name": "Frequencies", "description": "---> [CDAWEB PLOTS NOT SUPPORTED] Channel Frequency Centers (fixed), 512 (104.8 to 409610 Hz)", "centers": [ 104.79, 104.79, 104.79, 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"double", "x_cdf_DataType": "CDF_REAL4", "description": "Spin Plane E-Field (SFC Es) Spectra, 0.6 meter antenna, 104 Hz to 100 kHz [data monotonically sorted based on dependencies]", "fill": "-1.0", "units": "V**2 m**-2 Hz**-1", "x_label": "SFC Es", "x_format": ".3e", "x_fractionDigits": "3", "x_cdf_FORMAT": "E9.3", "x_cdf_FIELDNAM": "SFC Es Spectra", "x_cdf_VIRTUAL": "true", "x_cdf_FUNCT": "reorder_data", "x_cdf_COMPONENTS": [ "Es_Spectra", "Frequencies" ], "x_cdf_DISPLAY_TYPE": "default_dimension", "x_cdf_DEPEND_0": "Epoch", "size": [ 512 ] }, { "name": "Es_Spectra", "type": "double", "x_cdf_DataType": "CDF_REAL4", "description": "[CDAWEB PLOTS NOT SUPPORTED] Spin Plane E-Field (SFC Es) Spectra, 0.6 meter antenna, 104 Hz to 100 kHz", "fill": "-1.0", "units": "V**2 m**-2 Hz**-1", "x_label": "SFC Es", "x_format": ".3e", "x_fractionDigits": "3", "x_cdf_FORMAT": "E9.3", "x_cdf_FIELDNAM": "SFC Es Spectra", "x_cdf_DISPLAY_TYPE": "default_dimension", "x_cdf_DEPEND_0": "Epoch", "size": [ 512 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457.28, 457.28, 457.28, 457.28, 3998.2, 3998.2, 3998.2, 3998.2, 29816, 29816, 29816, 29816, 238430, 238430, 238430, 238430, 493.09, 493.09, 493.09, 493.09, 4284.7, 4284.7, 4284.7, 4284.7, 32108, 32108, 32108, 32108, 256770, 256770, 256770, 256770, 517.55, 517.55, 517.55, 517.55, 4480.4, 4480.4, 4480.4, 4480.4, 33673, 33673, 33673, 33673, 269300, 269300, 269300, 269300, 555.17, 555.17, 555.17, 555.17, 4781.3, 4781.3, 4781.3, 4781.3, 36081, 36081, 36081, 36081, 288560, 288560, 288560, 288560, 593.92, 593.92, 593.92, 593.92, 5091.4, 5091.4, 5091.4, 5091.4, 38561, 38561, 38561, 38561, 308400, 308400, 308400, 308400, 633.88, 633.88, 633.88, 633.88, 5411.1, 5411.1, 5411.1, 5411.1, 41118, 41118, 41118, 41118, 328860, 328860, 328860, 328860, 689.12, 689.12, 689.12, 689.12, 5853, 5853, 5853, 5853, 44654, 44654, 44654, 44654, 357140, 357140, 357140, 357140, 732.1, 732.1, 732.1, 732.1, 6196.8, 6196.8, 6196.8, 6196.8, 47405, 47405, 47405, 47405, 379150, 379150, 379150, 379150, 791.6, 791.6, 791.6, 791.6, 6672.8, 6672.8, 6672.8, 6672.8, 51213, 51213, 51213, 51213, 409610, 409610, 409610, 409610 ], "x_label": "Frequency", "units": "Hz" } ] }, { "name": "B_Spectra_Reorder", "type": "double", "x_cdf_DataType": "CDF_REAL4", "description": "Spin Plane B-Field (SFC B) Spectra, 1.0 m**2 loop antenna, 104 to 409 kHz [data monotonically sorted based on dependencies]", "fill": "-1.0", "units": "nT**2 Hz**-1", "x_label": "SFC B", "x_format": ".3e", "x_fractionDigits": "3", "x_cdf_FORMAT": "E9.3", "x_cdf_FIELDNAM": "SFC B Spectra", "x_cdf_VIRTUAL": "true", "x_cdf_FUNCT": "reorder_data", "x_cdf_COMPONENTS": [ "B_Spectra", "Frequencies" ], "x_cdf_DISPLAY_TYPE": "default_dimension", "x_cdf_DEPEND_0": "Epoch", "size": [ 512 ] }, { "name": "B_Spectra", "type": "double", "x_cdf_DataType": "CDF_REAL4", "description": "[CDAWEB PLOTS NOT SUPPORTED] Spin Plane B-Field (SFC B) Spectra, 1.0 m**2 loop antenna, 104 to 409 kHz", "fill": "-1.0", "units": "nT**2 Hz**-1", "x_label": "SFC B", "x_format": ".3e", "x_fractionDigits": "3", "x_cdf_FORMAT": "E9.3", "x_cdf_FIELDNAM": "SFC B Spectra", "x_cdf_DISPLAY_TYPE": "default_dimension", "x_cdf_DEPEND_0": "Epoch", "size": [ 512 ], "bins": [ { "name": "Frequencies", "description": "---> [CDAWEB PLOTS NOT SUPPORTED] Channel Frequency Centers (fixed), 512 (104.8 to 409610 Hz)", "centers": [ 104.79, 104.79, 104.79, 104.79, 1178.3, 1178.3, 1178.3, 1178.3, 7256.4, 7256.4, 7256.4, 7256.4, 57961, 57961, 57961, 57961, 113.44, 113.44, 113.44, 113.44, 1247.5, 1247.5, 1247.5, 1247.5, 7810.4, 7810.4, 7810.4, 7810.4, 62393, 62393, 62393, 62393, 122.17, 122.17, 122.17, 122.17, 1317.4, 1317.4, 1317.4, 1317.4, 8368.9, 8368.9, 8368.9, 8368.9, 66862, 66862, 66862, 66862, 130.97, 130.97, 130.97, 130.97, 1387.8, 1387.8, 1387.8, 1387.8, 8932.2, 8932.2, 8932.2, 8932.2, 71368, 71368, 71368, 71368, 139.85, 139.85, 139.85, 139.85, 1458.8, 1458.8, 1458.8, 1458.8, 9500.2, 9500.2, 9500.2, 9500.2, 75911, 75911, 75911, 75911, 148.79, 148.79, 148.79, 148.79, 1530.4, 1530.4, 1530.4, 1530.4, 10073, 10073, 10073, 10073, 80493, 80493, 80493, 80493, 157.82, 157.82, 157.82, 157.82, 1602.6, 1602.6, 1602.6, 1602.6, 10650, 10650, 10650, 10650, 85114, 85114, 85114, 85114, 166.92, 166.92, 166.92, 166.92, 1675.4, 1675.4, 1675.4, 1675.4, 11233, 11233, 11233, 11233, 89773, 89773, 89773, 89773, 176.1, 176.1, 176.1, 176.1, 1748.8, 1748.8, 1748.8, 1748.8, 11820, 11820, 11820, 11820, 94473, 94473, 94473, 94473, 185.36, 185.36, 185.36, 185.36, 1822.8, 1822.8, 1822.8, 1822.8, 12413, 12413, 12413, 12413, 99212, 99212, 99212, 99212, 204.11, 204.11, 204.11, 204.11, 1972.9, 1972.9, 1972.9, 1972.9, 13613, 13613, 13613, 13613, 108810, 108810, 108810, 108810, 213.61, 213.61, 213.61, 213.61, 2048.9, 2048.9, 2048.9, 2048.9, 14221, 14221, 14221, 14221, 113680, 113680, 113680, 113680, 232.85, 232.85, 232.85, 232.85, 2202.8, 2202.8, 2202.8, 2202.8, 15453, 15453, 15453, 15453, 123530, 123530, 123530, 123530, 252.44, 252.44, 252.44, 252.44, 2359.5, 2359.5, 2359.5, 2359.5, 16706, 16706, 16706, 16706, 133560, 133560, 133560, 133560, 262.36, 262.36, 262.36, 262.36, 2438.9, 2438.9, 2438.9, 2438.9, 17341, 17341, 17341, 17341, 138640, 138640, 138640, 138640, 282.47, 282.47, 282.47, 282.47, 2599.8, 2599.8, 2599.8, 2599.8, 18628, 18628, 18628, 18628, 148930, 148930, 148930, 148930, 292.66, 292.66, 292.66, 292.66, 2681.3, 2681.3, 2681.3, 2681.3, 19280, 19280, 19280, 19280, 154150, 154150, 154150, 154150, 313.32, 313.32, 313.32, 313.32, 2846.5, 2846.5, 2846.5, 2846.5, 20602, 20602, 20602, 20602, 164730, 164730, 164730, 164730, 334.35, 334.35, 334.35, 334.35, 3014.8, 3014.8, 3014.8, 3014.8, 21949, 21949, 21949, 21949, 175500, 175500, 175500, 175500, 355.78, 355.78, 355.78, 355.78, 3186.2, 3186.2, 3186.2, 3186.2, 23320, 23320, 23320, 23320, 186470, 186470, 186470, 186470, 377.6, 377.6, 377.6, 377.6, 3360.8, 3360.8, 3360.8, 3360.8, 24716, 24716, 24716, 24716, 197640, 197640, 197640, 197640, 399.83, 399.83, 399.83, 399.83, 3538.6, 3538.6, 3538.6, 3538.6, 26139, 26139, 26139, 26139, 209020, 209020, 209020, 209020, 433.97, 433.97, 433.97, 433.97, 3811.7, 3811.7, 3811.7, 3811.7, 28324, 28324, 28324, 28324, 226500, 226500, 226500, 226500, 457.28, 457.28, 457.28, 457.28, 3998.2, 3998.2, 3998.2, 3998.2, 29816, 29816, 29816, 29816, 238430, 238430, 238430, 238430, 493.09, 493.09, 493.09, 493.09, 4284.7, 4284.7, 4284.7, 4284.7, 32108, 32108, 32108, 32108, 256770, 256770, 256770, 256770, 517.55, 517.55, 517.55, 517.55, 4480.4, 4480.4, 4480.4, 4480.4, 33673, 33673, 33673, 33673, 269300, 269300, 269300, 269300, 555.17, 555.17, 555.17, 555.17, 4781.3, 4781.3, 4781.3, 4781.3, 36081, 36081, 36081, 36081, 288560, 288560, 288560, 288560, 593.92, 593.92, 593.92, 593.92, 5091.4, 5091.4, 5091.4, 5091.4, 38561, 38561, 38561, 38561, 308400, 308400, 308400, 308400, 633.88, 633.88, 633.88, 633.88, 5411.1, 5411.1, 5411.1, 5411.1, 41118, 41118, 41118, 41118, 328860, 328860, 328860, 328860, 689.12, 689.12, 689.12, 689.12, 5853, 5853, 5853, 5853, 44654, 44654, 44654, 44654, 357140, 357140, 357140, 357140, 732.1, 732.1, 732.1, 732.1, 6196.8, 6196.8, 6196.8, 6196.8, 47405, 47405, 47405, 47405, 379150, 379150, 379150, 379150, 791.6, 791.6, 791.6, 791.6, 6672.8, 6672.8, 6672.8, 6672.8, 51213, 51213, 51213, 51213, 409610, 409610, 409610, 409610 ], "x_label": "Frequency", "units": "Hz" } ] }, { "name": "Ex_Receivers", "type": "integer", "x_cdf_DataType": "CDF_BYTE", "description": "The SFR Receivers used to measure the Ex Antenna output (1=A,2=B,3=both)", "fill": "0", "units": " ", "x_label": "SFR_Ex_RecID", "x_cdf_FORMAT": "I1", "x_cdf_FIELDNAM": "SFC Ex Receiver", "x_cdf_DISPLAY_TYPE": "default_dimension", "x_cdf_DEPEND_0": "Epoch" }, { "name": "Ez_Receivers", "type": "integer", "x_cdf_DataType": "CDF_BYTE", "description": "---> The SFR Receivers used to measure the Ez Antenna output", "fill": "0", "units": " ", "x_label": "SFR_Ez_RecID", "x_cdf_FORMAT": "I1", "x_cdf_FIELDNAM": "SFC Ez Receiver", "x_cdf_DISPLAY_TYPE": "default_dimension", "x_cdf_DEPEND_0": "Epoch" }, { "name": "Es_Receivers", "type": "integer", "x_cdf_DataType": "CDF_BYTE", "description": "---> The SFR Receivers used to measure the Es Antenna output", "fill": "0", "units": " ", "x_label": "SFR_Es_RecID", "x_cdf_FORMAT": "I1", "x_cdf_FIELDNAM": "SFC Es Receiver", "x_cdf_DISPLAY_TYPE": "default_dimension", "x_cdf_DEPEND_0": "Epoch" }, { "name": "B_Receivers", "type": "integer", "x_cdf_DataType": "CDF_BYTE", "description": "---> The SFR Receivers used to measure the B Antenna output", "fill": "0", "units": " ", "x_label": "SFR_B_RecID", "x_cdf_FORMAT": "I1", "x_cdf_FIELDNAM": "SFC B Receiver", "x_cdf_DISPLAY_TYPE": "default_dimension", "x_cdf_DEPEND_0": "Epoch" }, { "name": "WBR_xmit", "type": "integer", "x_cdf_DataType": "CDF_BYTE", "description": "---> Wideband (waveform) data availability status", "fill": "0", "units": "(1=possible)", "x_label": "WaveformAvail", "x_cdf_FORMAT": "I1", "x_cdf_FIELDNAM": "Waveform Availability", "x_cdf_DEPEND_0": "Epoch" }, { "name": "Quality_Flag", "type": "integer", "x_cdf_DataType": "CDF_BYTE", "description": "Integer combining all data quality flags (0 = no issues detected)", "fill": "-1", "units": "(0=OK) ", "x_label": "QualFlagsSum", "x_cdf_FORMAT": "I1", "x_cdf_FIELDNAM": "Data Quality Flags", "x_cdf_DEPEND_0": "Epoch" } ], "x_info_author": "bw", "x_cdaweb_hapi_version": "20260130.0606", "x_info_caching": false, "status": { "code": 1200, "message": "OK" }, "HAPI": "3.2", "x_LastUpdate": "2026-04-14T15:09:42Z" }