Fig. 13

A PSD plot for the TEC data from NAKG station. The local time is divided every 2 h for 18–06 LT zones similar to Fig. 10 to find the LT zone where the enhancement of the PSD in rainy condition is most clear. The difference between rainy cases and no-rain cases is most clear in 22–24LT zone. Thick lines are for the result in rainy condition (> 0.08 mm/h) and thin broken lines are in almost no-rain (< 0.002 mm/hour) condition