Apr. 2017 Hokkaido Sapporo-shi Expected value of LF field strength Transmitting Station: Hagane-yama LF station Latitude of receiver(Degree): 43.05 Longitude of receiver(Degree): 141.35 Distance from Hagane-yama LF station (km): 1440 Time(JST) Field Strength(mV/m) Field Strength(dB uV/m) 0:00 0.894 59.0 1:00 0.894 59.0 2:00 0.894 59.0 3:00 0.894 59.0 4:00 0.892 59.0 5:00 0.737 57.3 6:00 0.878 58.9 7:00 0.822 58.3 8:00 0.602 55.6 9:00 0.424 52.6 10:00 0.309 49.8 11:00 0.241 47.7 12:00 0.213 46.5 13:00 0.217 46.7 14:00 0.253 48.1 15:00 0.338 50.6 16:00 0.467 53.4 17:00 0.660 56.4 18:00 0.867 58.8 19:00 0.840 58.5 20:00 0.784 57.9 21:00 0.894 59.0 22:00 0.894 59.0 23:00 0.894 59.0