Apr. 2015 Tochigi-ken Utsunomiya-shi Expected value of LF field strength Transmitting Station: Hagane-yama LF station Latitude of receiver(Degree): 36.55 Longitude of receiver(Degree): 139.88 Distance from Hagane-yama LF station (km): 946 Time(JST) Field Strength(mV/m) Field Strength(dB uV/m) 0:00 0.899 59.1 1:00 0.899 59.1 2:00 0.899 59.1 3:00 0.899 59.1 4:00 0.855 58.6 5:00 1.426 63.1 6:00 0.977 59.8 7:00 0.739 57.4 8:00 1.205 61.6 9:00 1.170 61.4 10:00 0.973 59.8 11:00 0.794 58.0 12:00 0.715 57.1 13:00 0.730 57.3 14:00 0.842 58.5 15:00 1.058 60.5 16:00 1.209 61.6 17:00 1.135 61.1 18:00 0.487 53.7 19:00 1.431 63.1 20:00 1.143 61.2 21:00 0.873 58.8 22:00 0.899 59.1 23:00 0.899 59.1