1. Ground-Based Global Navigation Satellite System Observation Summary Data (30-second sampling, daily files) from NASA CDDIS
  2. temporal
  3. 2009
  4. 04
DayFile Count
01408
02409
03403
04398
05403
06404
07401
08400
09398
10399
11400
12392
13398
14411
15406
16404
17400
18372
19388
20410
21397
22406
23401
24398
25392
26396
27405
28409
29417
30405