Jul. 2015 Yamagata-ken Yamagata-shi Expected value of LF field strength Transmitting Station: Hagane-yama LF station Latitude of receiver(Degree): 38.23 Longitude of receiver(Degree): 140.37 Distance from Hagane-yama LF station (km): 1058 Time(JST) Field Strength(mV/m) Field Strength(dB uV/m) 0:00 1.364 62.7 1:00 1.364 62.7 2:00 1.357 62.6 3:00 1.337 62.5 4:00 1.433 63.1 5:00 0.799 58.1 6:00 0.818 58.2 7:00 1.145 61.2 8:00 1.004 60.0 9:00 0.760 57.6 10:00 0.498 53.9 11:00 0.354 51.0 12:00 0.300 49.5 13:00 0.309 49.8 14:00 0.388 51.8 15:00 0.567 55.1 16:00 0.836 58.4 17:00 1.070 60.6 18:00 1.111 60.9 19:00 0.620 55.9 20:00 1.159 61.3 21:00 1.406 63.0 22:00 1.344 62.6 23:00 1.361 62.7