Upper Atmosphere Physics And Radiopropagation Working Group, Cesaroni, C., Marcocci, C., Pica, E., &amp; Spogli, L. (2020). <i>Electronic Space Weather upper atmosphere database (eSWua) - Total Electron Content (TEC) data</i>. Istituto Nazionale di Geofisica e Vulcanologia (INGV). https://doi.org/10.13127/ESWUA/TEC