Apr. 2015 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 3.988 72.0 4:00 6.890 76.8 5:00 6.991 76.9 6:00 6.015 75.6 7:00 4.943 73.9 8:00 5.817 75.3 9:00 6.030 75.6 10:00 5.689 75.1 11:00 5.601 75.0 12:00 5.597 75.0 13:00 5.655 75.0 14:00 5.928 75.5 15:00 5.995 75.6 16:00 4.826 73.7 17:00 6.637 76.4 18:00 6.429 76.2 19:00 7.044 77.0 20:00 4.038 72.1 21:00 3.821 71.6 22:00 3.819 71.6 23:00 3.819 71.6