Earthdata
CMR Virtual Directories

Ground-Based Global Navigation Satellite System (GNSS) Compact Observation Data (30-second sampling, daily, 24 hour files) from NASA CDDIS
temporal
1999
04

Day	File Count
01	186
02	182
03	183
04	182
05	185
06	184
07	183
08	182
09	180
10	184
11	178
12	186
13	190
14	187
15	189
16	188
17	187
18	184
19	189
20	187
21	190
22	187
23	189
24	181
25	127
26	206
27	166
28	189
29	182
30	182

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NASA Official: Stephen Berrick
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