1. Ground-Based Global Navigation Satellite System Observation Summary Data (30-second sampling, daily files) from NASA CDDIS
  2. temporal
  3. 1997
  4. 01
DayFile Count
01121
02127
03125
04121
05119
06127
07118
08128
09125
10134
11126
12130
13129
14124
15132
16128
17120
18127
19124
20126
21128
22127
23129
24128
25127
26128
27127
28123
29135
30122
31128