1. 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
  2. temporal
  3. 2025
MonthFile Count
013214
022877
033194
042814
052614
06730
072378
082917
092808
102859
112784
122852