Earthdata
CMR Virtual Directories

Global Navigation Satellite System (GNSS) Ionosphere Vertical Total Electron Content (VTEC) Fluctuation Measurement Product from NASA CDDIS
temporal
2021

Month	File Count
01	31
02	28
03	31
04	30
05	31
06	30
07	31
08	31
09	30
10	31
11	30
12	31

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NASA Official: Stephen Berrick
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