Sep. 2023 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 1.471 63.4 1:00 1.471 63.4 2:00 1.471 63.4 3:00 1.471 63.4 4:00 1.461 63.3 5:00 1.513 63.6 6:00 0.919 59.3 7:00 0.963 59.7 8:00 1.227 61.8 9:00 1.052 60.4 10:00 0.798 58.0 11:00 0.588 55.4 12:00 0.497 53.9 13:00 0.513 54.2 14:00 0.642 56.1 15:00 0.872 58.8 16:00 1.121 61.0 17:00 1.217 61.7 18:00 0.745 57.4 19:00 1.324 62.4 20:00 1.439 63.2 21:00 1.469 63.3 22:00 1.471 63.4 23:00 1.471 63.4