Jul. 2014 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 3.686 71.3 1:00 3.753 71.5 2:00 3.889 71.8 3:00 6.096 75.7 4:00 4.002 72.0 5:00 4.049 72.1 6:00 6.486 76.2 7:00 4.958 73.9 8:00 6.183 75.8 9:00 5.782 75.2 10:00 5.598 75.0 11:00 5.585 74.9 12:00 5.585 74.9 13:00 5.590 74.9 14:00 5.712 75.1 15:00 6.161 75.8 16:00 5.414 74.7 17:00 5.571 74.9 18:00 4.735 73.5 19:00 6.535 76.3 20:00 7.060 77.0 21:00 3.927 71.9 22:00 3.778 71.5 23:00 3.692 71.3