Nov. 2021 Yamagata-ken Yamagata-shi Expected value of LF field strength Transmitting Station: Ohtakadoya-yama LF station Latitude of receiver(Degree): 38.23 Longitude of receiver(Degree): 140.37 Distance from Ohtakadoya-yama LF station (km): 105 Time(JST) Field Strength(mV/m) Field Strength(dB uV/m) 0:00 10.756 80.6 1:00 10.756 80.6 2:00 10.756 80.6 3:00 10.756 80.6 4:00 10.751 80.6 5:00 10.257 80.2 6:00 10.251 80.2 7:00 8.942 79.0 8:00 9.650 79.7 9:00 8.950 79.0 10:00 9.682 79.7 11:00 9.545 79.6 12:00 9.516 79.6 13:00 9.675 79.7 14:00 9.236 79.3 15:00 9.062 79.1 16:00 8.355 78.4 17:00 8.573 78.7 18:00 9.222 79.3 19:00 10.683 80.6 20:00 10.756 80.6 21:00 10.756 80.6 22:00 10.756 80.6 23:00 10.756 80.6