:Product: 201902162000_DIF.txt :Created: 2019 Feb 16 2021 UTC # North America Total Electron Content (NATEC), Operational Version 2.0 # Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center. # # Units: TEC: TECU (10^16 electrons/m^2) x 10 # Longitude, Latitude: degrees x 10 # Source: Kalman filter data assimilation model using ground-based GPS data from NGS, CORS, RTIGS, GPS/MET # Missing data: n/a # End record identifier: End of file # Time Range: 2019 Feb 16 2000 - 2015 UTC # Cadence: 15 minutes # URL: http://www.swpc.noaa.gov/products/us-total-electron-content # # See _______________ for format explanation. # # Difference from 10 day average indicating recent trend #------------------------------------------------------------------------- 66 -1920 -1880 -1840 -1800 -1760 -1720 -1680 -1640 -1600 -1560 -1520 -1480 -1440 -1400 -1360 -1320 -1280 -1240 -1200 -1160 -1120 -1080 -1040 -1000 -960 -920 -880 -840 -800 -760 -720 -680 -640 -600 -560 -520 -480 -440 -400 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