Keogram of bandpass filtered L_G-F phase combination from ground GNSS stations of Chilean and Argentinian networks, recalculated to TEC units, in the UTC evening on September 10, 2015. All distances of IPP tracks are calculated with respect to the position of the mainshock. Large dots denote Swarm A and B passes with distances respective to the mainshock location, and their color indicate size of power PSD sampled at 50 s. from the spectrogram. The blue-red strips denote different TIDs.