{"HAPI": "3.0", "status": {"code": 1200, "message": "OK"}, "x_dataset": "SW_OPER_MITCTEC_2F", "x_datasetType": "SW_MITxTEC_2F", "startDate": "2014-07-10T11:33:14Z", "stopDate": "2026-04-05T22:40:15Z", "cadence": "PT23M24S", "x_maxTimeSelection": "P7020D", "modificationDate": "2026-04-14T10:40:55.201Z", "description": "Swarm C mid-latitude ionospheric trough boundaries and minima from from Total Electron Content (TEC) data", "x_dataTerms": "This dataset is provided by the European Space Agency and it is subject to terms condition described in https://vires.services/data_terms.", "resourceURL": "https://swarmhandbook.earth.esa.int/catalogue/SW_MITxTEC_2F", "parameters": [{"name": "Timestamp", "description": "Time of observation, UTC", "units": "UTC", "type": "isotime", "length": 24, "x_standard": "UTC", "x_epoch": "1970-01-01T00:00:00Z", "x_unit": "ms", "x_type": "int64", "fill": null}, {"name": "Counter", "size": [2], "description": "Swarm orbit counter and quarter orbit (four per Swarm orbit) counter", "units": null, "type": "integer", "x_type": "uint32", "fill": null}, {"name": "Latitude", "description": "Geocentric latitude in ITRF", "units": "deg", "type": "double", "x_type": "float64", "fill": null}, {"name": "Longitude", "description": "Geocentric longitude in ITRF", "units": "deg", "type": "double", "x_type": "float64", "fill": null}, {"name": "Radius", "description": "Geocentric radius in ITRF", "units": "deg", "type": "double", "x_type": "float64", "fill": null}, {"name": "Latitude_QD", "description": "Quasi-dipole latitude", "units": "deg", "type": "double", "x_type": "float64", "fill": null}, {"name": "Longitude_QD", "description": "Quasi-dipole longitude", "units": "deg", "type": "double", "x_type": "float64", "fill": null}, {"name": "MLT_QD", "description": "Magnetic local time (QD)", "units": "hour", "type": "double", "x_type": "float64", "fill": null}, {"name": "L_value", "description": "L-value", "units": null, "type": "double", "x_type": "float64", "fill": null}, {"name": "SZA", "description": "Solar zenith angle", "units": "deg", "type": "double", "x_type": "float64", "fill": null}, {"name": "TEC", "description": "Total electron content", "units": "TECU", "type": "double", "x_type": "float64", "fill": null}, {"name": "Depth", "description": "Depth of the MIT", "units": "cm^-3", "type": "double", "x_type": "float64", "fill": null}, {"name": "DR", "description": "Relative change in density within the MIT", "units": "%", "type": "double", "x_type": "float64", "fill": null}, {"name": "Width", "description": "Width of the MIT calculated from QD latitudes", "units": "deg", "type": "double", "x_type": "float64", "fill": null}, {"name": "dL", "description": "Width of the MIT calculated from L-values", "units": null, "type": "double", "x_type": "float64", "fill": null}, {"name": "PW_Gradient", "description": "Change in TEC at the poleward wall of the MIT divided by QD latitude difference", "units": "TECU/deg", "type": "double", "x_type": "float64", "fill": null}, {"name": "EW_Gradient", "description": "Change in TEC at the equatorward wall of the MIT divided by QD latitude difference", "units": "TECU/deg", "type": "double", "x_type": "float64", "fill": null}, {"name": "Quality", "size": [8], "description": "Characterizes the detection quality of the MIT as a whole", "units": null, "type": "integer", "x_type": "int8", "fill": null}]}