Fig. 7
From: EUV signals associated with O+ ions observed from ISS-IMAP/EUVI in the nightside ionosphere
Comparison of the IONEX TEC values shown in Fig. 3 with the TEC values reconstructed from the IRI model. The IONEX TEC values at the ISS location and the tangential point along the line of sight are plotted with the thick orange and green lines, respectively. The IRI TEC values at the ISS location and the tangential point are plotted with the pale orange and green lines, respectively