Jul. 2022 Niigata-ken Niigata-shi Expected value of LF field strength Transmitting Station: Hagane-yama LF station Latitude of receiver(Degree): 37.90 Longitude of receiver(Degree): 139.02 Distance from Hagane-yama LF station (km): 936 Time(JST) Field Strength(mV/m) Field Strength(dB uV/m) 0:00 0.852 58.6 1:00 0.852 58.6 2:00 0.839 58.5 3:00 0.804 58.1 4:00 1.206 61.6 5:00 1.489 63.5 6:00 0.456 53.2 7:00 1.038 60.3 8:00 1.224 61.8 9:00 1.117 61.0 10:00 0.877 58.9 11:00 0.723 57.2 12:00 0.662 56.4 13:00 0.673 56.6 14:00 0.762 57.6 15:00 0.945 59.5 16:00 1.164 61.3 17:00 1.212 61.7 18:00 0.846 58.6 19:00 0.724 57.2 20:00 1.617 64.2 21:00 0.970 59.7 22:00 0.817 58.2 23:00 0.847 58.6