1. Ground-Based Global Navigation Satellite System Observation Summary Data (30-second sampling, daily files) from NASA CDDIS
  2. temporal
  3. 1997
  4. 12
DayFile Count
01142
02140
03141
04142
05151
06140
07142
08147
09139
10139
11135
12142
13146
14141
15144
16137
17137
18141
19136
20143
21138
22137
23138
24137
25147
26137
27135
28143
29139
30136
31144