Earthdata
CMR Virtual Directories

Ground-Based Global Navigation Satellite System Observation Summary Data (30-second sampling, daily files) from NASA CDDIS
temporal
2012
01

Day	File Count
01	526
02	590
03	595
04	600
05	607
06	608
07	613
08	539
09	715
10	570
11	591
12	576
13	583
14	564
15	650
16	623
17	642
18	487
19	589
20	701
21	629
22	596
23	645
24	627
25	623
26	588
27	607
28	498
29	584
30	717
31	628

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NASA Official: Doug Newman
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