Apr. 2018 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 0.773 57.8 1:00 0.773 57.8 2:00 0.773 57.8 3:00 0.773 57.8 4:00 0.770 57.7 5:00 0.602 55.6 6:00 0.768 57.7 7:00 0.696 56.9 8:00 0.485 53.7 9:00 0.334 50.5 10:00 0.245 47.8 11:00 0.178 45.0 12:00 0.157 43.9 13:00 0.160 44.1 14:00 0.190 45.6 15:00 0.274 48.8 16:00 0.364 51.2 17:00 0.538 54.6 18:00 0.743 57.4 19:00 0.734 57.3 20:00 0.637 56.1 21:00 0.773 57.8 22:00 0.773 57.8 23:00 0.773 57.8