Apr. 2015 Chiba-ken Chiba-shi Expected value of LF field strength Transmitting Station: Hagane-yama LF station Latitude of receiver(Degree): 35.60 Longitude of receiver(Degree): 140.12 Distance from Hagane-yama LF station (km): 939 Time(JST) Field Strength(mV/m) Field Strength(dB uV/m) 0:00 0.865 58.7 1:00 0.865 58.7 2:00 0.865 58.7 3:00 0.865 58.7 4:00 0.821 58.3 5:00 1.392 62.9 6:00 1.031 60.3 7:00 0.707 57.0 8:00 1.202 61.6 9:00 1.182 61.4 10:00 0.988 59.9 11:00 0.811 58.2 12:00 0.732 57.3 13:00 0.748 57.5 14:00 0.860 58.7 15:00 1.074 60.6 16:00 1.217 61.7 17:00 1.120 61.0 18:00 0.464 53.3 19:00 1.486 63.4 20:00 1.082 60.7 21:00 0.839 58.5 22:00 0.865 58.7 23:00 0.865 58.7