From the statistics, it was found that every occurrence of a tornado 1 000 times, will be F0 level of approximately 389 times, the level of F1 number approximately 356 times, level. F2 number approximately 194 times, the level of F3 number approximately 49 times,F4 level of about 11 times and levels of F5 number approximately 1 times.
การแปล กรุณารอสักครู่..