Earthdata
CMR Virtual Directories

Ground-Based Global Navigation Satellite System Observation Summary Data (30-second sampling, daily files) from NASA CDDIS
temporal
2013
05

Day	File Count
01	494
02	500
03	476
04	500
05	476
06	500
07	484
08	489
09	504
10	486
11	496
12	487
13	499
14	495
15	497
16	500
17	502
18	505
19	509
20	507
21	497
22	494
23	506
24	520
25	498
26	479
27	504
28	493
29	506
30	510
31	494

NASA Links

NASA Official: Doug Newman
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