Example of perturbed Ne (a) and TEC (b) profiles from COSMIC-2 ionPrf data on 2022-08-17 at 19:38 UTC for a GLONASS-COSMIC-2 link. The latitude, longitude, and time of acquisition of the peak electron density (edMax) are given in the plot headers. The left panels of subplots show the original perturbed profiles in blue (Ne or TEC), and overlaid on them are the low-pass filtered profiles in red (Ne_lp,filt or TEC_lp,filt). The right panels show the high-pass filtered profile with fluctuations <50 km scale length (Ne_hp,filt or TEC_hp,filt).