Fig. 13From: Statistical study of PMSE response to HF heating in two altitude regionsComparison of ratio R1/R0 in lower and upper layers for those heating cycles of Fig. 11 where precipitation and PMSE occur simultaneously. The vertical dash line is used to separate the measurements of X- and O-modes polarization. In this case, the HF transmitter frequency was 5.423 MHzBack to article page