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Ground-Based Global Navigation Satellite System Observation Summary Data (30-second sampling, daily files) from NASA CDDIS
temporal
1997
11
Day
File Count
01
134
02
138
03
141
04
138
05
143
06
138
07
137
08
136
09
138
10
141
11
141
12
138
13
141
14
136
15
136
16
140
17
148
18
139
19
137
20
141
21
144
22
139
23
134
24
139
25
137
26
131
27
136
28
139
29
139
30
140