event begin max end class region ----- ----- ----- ----- ----- ------ 1920 01:49 01:58 02:02 B5.4 1704 1930 02:04 02:09 02:14 B6.8 1704 1940 02:29 02:40 03:28 B5.5 1695 1990 12:15 12:22 12:27 B6.8 1703