Table 3 RMS deviation of TEC_iri from TEC_gps, in TECU, at the main phase of the ionospheric storms at solar maximum (2000) and solar minimum (2006). Results of IRI-Plas model for two options: (1) ionosonde-derived inputof f_oF₂ and h_mF₂ combined with input of TEC_gps, (2) input of f_oF₂ and h_mF₂ from ionosonde alone. Instantaneous results (i) and monthly median results (m) are shown. Data are missing for two stations for 2000.

From: Inter-hemispheric imaging of the ionosphere with the upgraded IRI-Plas model during the space weather storms