Aug. 2022 Yamagata-ken Yamagata-shi Expected value of LF field strength Transmitting Station: Hagane-yama LF station Latitude of receiver(Degree): 38.23 Longitude of receiver(Degree): 140.37 Distance from Hagane-yama LF station (km): 1058 Time(JST) Field Strength(mV/m) Field Strength(dB uV/m) 0:00 1.364 62.7 1:00 1.364 62.7 2:00 1.364 62.7 3:00 1.357 62.6 4:00 1.344 62.6 5:00 1.293 62.2 6:00 0.582 55.3 7:00 1.105 60.9 8:00 1.074 60.6 9:00 0.838 58.5 10:00 0.579 55.3 11:00 0.411 52.3 12:00 0.344 50.7 13:00 0.356 51.0 14:00 0.452 53.1 15:00 0.660 56.4 16:00 0.917 59.2 17:00 1.127 61.0 18:00 0.995 60.0 19:00 0.577 55.2 20:00 1.419 63.0 21:00 1.338 62.5 22:00 1.364 62.7 23:00 1.364 62.7