Sep. 2013 Niigata-ken Niigata-shi Expected value of LF field strength Transmitting Station: Ohtakadoya-yama LF station Latitude of receiver(Degree): 37.90 Longitude of receiver(Degree): 139.02 Distance from Ohtakadoya-yama LF station (km): 172 Time(JST) Field Strength(mV/m) Field Strength(dB uV/m) 0:00 3.819 71.6 1:00 3.819 71.6 2:00 3.819 71.6 3:00 3.870 71.8 4:00 4.703 73.4 5:00 4.246 72.6 6:00 4.427 72.9 7:00 5.822 75.3 8:00 5.341 74.6 9:00 6.115 75.7 10:00 5.848 75.3 11:00 5.675 75.1 12:00 5.662 75.1 13:00 5.788 75.3 14:00 6.097 75.7 15:00 5.657 75.1 16:00 5.167 74.3 17:00 5.363 74.6 18:00 5.779 75.2 19:00 5.984 75.5 20:00 3.923 71.9 21:00 3.819 71.6 22:00 3.819 71.6 23:00 3.819 71.6