Earthdata
CMR Virtual Directories

Global Navigation Satellite System (GNSS) Ionosphere Vertical Total Electron Content (VTEC) Analysis Center Product from NASA CDDIS
temporal
1999

Month	File Count
01	117
02	120
03	129
04	150
05	159
06	114
07	156
08	136
09	174
10	153
11	114
12	159

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NASA Official: Stephen Berrick
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