Jul. 2023 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 0.969 59.7 1:00 0.969 59.7 2:00 0.960 59.6 3:00 0.934 59.4 4:00 1.266 62.1 5:00 1.618 64.2 6:00 0.566 55.1 7:00 1.113 60.9 8:00 1.316 62.4 9:00 1.183 61.5 10:00 0.928 59.4 11:00 0.757 57.6 12:00 0.687 56.7 13:00 0.700 56.9 14:00 0.801 58.1 15:00 1.001 60.0 16:00 1.240 61.9 17:00 1.301 62.3 18:00 0.916 59.2 19:00 0.846 58.5 20:00 1.723 64.7 21:00 1.035 60.3 22:00 0.944 59.5 23:00 0.966 59.7