Jul 2010 Niigata-ken Niigata-shi Expected value of LF field strength Transmitting Station: Hagane-yama LF station Latitude of receiver(Degree): 37.90 Longitude of receiver(Degree): 139.02 Time(JST) Field Strength(mV/m) Field Strength(dB uV/m) 0:00 0.746 57.5 1:00 0.746 57.5 2:00 0.735 57.3 3:00 0.701 56.9 4:00 1.181 61.4 5:00 1.392 62.9 6:00 0.362 51.2 7:00 0.966 59.7 8:00 1.153 61.2 9:00 1.070 60.6 10:00 0.841 58.5 11:00 0.698 56.9 12:00 0.643 56.2 13:00 0.653 56.3 14:00 0.734 57.3 15:00 0.906 59.1 16:00 1.109 60.9 17:00 1.137 61.1 18:00 0.785 57.9 19:00 0.622 55.9 20:00 1.542 63.8 21:00 0.945 59.5 22:00 0.714 57.1 23:00 0.742 57.4