Dec. 2020 Kumamoto-ken Kumamoto-shi Expected value of LF field strength Transmitting Station: Ohtakadoya-yama LF station Latitude of receiver(Degree): 32.78 Longitude of receiver(Degree): 130.73 Distance from Ohtakadoya-yama LF station (km): 1051 Time(JST) Field Strength(mV/m) Field Strength(dB uV/m) 0:00 0.977 59.8 1:00 0.977 59.8 2:00 0.977 59.8 3:00 0.977 59.8 4:00 0.977 59.8 5:00 0.972 59.7 6:00 0.538 54.6 7:00 0.728 57.2 8:00 0.986 59.9 9:00 0.988 59.9 10:00 0.925 59.3 11:00 0.880 58.9 12:00 0.875 58.8 13:00 0.910 59.2 14:00 0.973 59.8 15:00 1.002 60.0 16:00 0.819 58.3 17:00 0.436 52.8 18:00 0.891 59.0 19:00 0.977 59.8 20:00 0.977 59.8 21:00 0.977 59.8 22:00 0.977 59.8 23:00 0.977 59.8