Fig. 8

Quantile–quantile (Q–Q) plots of the \( N_{\text{m}} F2 \) nearly simultaneous measurements by the RKN radar and the CADI ionosonde or the RISR radar for various time sectors and experiments. a–d are for the RKN-CADI joint data set, e–h are for the RKN-RISR 1 beam joint data set and i–l are for the RKN-RISR 20 beams joint data set. The total number of points for each data set is shown at the bottom of the plots