Fig. 1From: Comparison of SuperDARN peak electron density estimates based on elevation angle measurements to ionosonde and incoherent scatter radar measurementsAn example of elevation angle data for the RKN radar recorded on 03 March 2016. Corrections of the instrumental time delay of 3 ns have been applied. The nearly constant elevation angles, used for electron density estimates, are colored in blue and violet. Notice presence of gates with high-elevation angles (brown color) mixed with low elevation angles (blue color) at large range gatesBack to article page