event begin max end class region ----- ----- ----- ----- ----- ------ 1920 04:18 04:34 05:01 C1.2 1836 1930 06:43 06:47 07:05 B5.3 1834 1990 13:07 13:14 13:25 B5.8 1836 1980 21:31 21:34 21:36 B4.4