Sep. 2023 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 10.913 80.8 1:00 10.913 80.8 2:00 10.913 80.8 3:00 10.852 80.7 4:00 10.400 80.3 5:00 10.329 80.3 6:00 8.309 78.4 7:00 9.078 79.2 8:00 9.598 79.6 9:00 9.358 79.4 10:00 9.036 79.1 11:00 9.096 79.2 12:00 9.104 79.2 13:00 9.047 79.1 14:00 9.212 79.3 15:00 9.789 79.8 16:00 8.387 78.5 17:00 8.360 78.4 18:00 7.930 78.0 19:00 9.243 79.3 20:00 10.790 80.7 21:00 10.913 80.8 22:00 10.913 80.8 23:00 10.913 80.8