Earthdata
CMR Virtual Directories

Ground-Based Global Navigation Satellite System (GNSS)-based Upper Atmospheric Realtime Disaster Information and Alert Network (GUARDIAN) Near Real-Time Ionospheric Total Electron Count (5-second sampling, 24-hour files) from NASA CDDIS
temporal
2026
04

Day	File Count
01	90
02	89
03	89
04	89
05	89
06	88
07	76
08	76
09	89
10	89
11	89
12	87
13	86
14	88
15	87
16	89
17	89
18	65
19	70
20	89
21	88
22	88

NASA Links

NASA Official: Doug Newman
Web Privacy Policy
Data and Information Policy
Communications Policy
Freedom of Information Act
USA.gov
Sitemap
V 20.4.1.56