2.3.0 spase://GBO/NumericalData/Thule/Magnetometer/PT1M PCI (Polar Cap Index), Greenland 2018-06-28T22:02:01Z PCI (Polar Cap Index), Thule (now Qaanaaq), Greenland; also called PCN - Polar Cap North spase://SMWG/Person/Juergen.Matzka GeneralContact spase://VSPO/NumericalData/P_VOSTOK_HDR_PCI_THULE spase://VSPO/NumericalData/WDC/Thule/Magnetometer/PT1M spase://SMWG/Repository/WDC/Geomagnetism/DTU Online Open WDC/Geomagnetism at the Technical University of Denmark (DTU) in Copenhagen ftp://ftp.space.dtu.dk/WDC/indices/pcn/ In ASCII via ftp from NGDC ftp://ftp.ngdc.noaa.gov/STP/SOLAR_DATA/RELATED_INDICES/PC_INDEX/VOSTOK Text CALIBRATED spase://SMWG/Instrument/WDC/Thule/Magnetometer MagneticField ActivityIndex 1975-01-01T00:00:00 -P1D Data are current to within hours. PT1M Earth.Surface