年份 | 类型 | 1月 | 2月 | 3月 | 4月 | 5月 | 6月 | 7月 | 8月 | 9月 | 10月 | 11月 | 12月 | 合计 |
1998 | 东部横切变 | 0 | 1 | 2 | 2 | 5 | 1 | 4 | 4 | 3 | 0 | 1 | 0 | 23 |
东部竖切变 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 9 | |
西部横切变 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
西部竖切变 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
1999 | 东部横切变 | 0 | 0 | 1 | 1 | 4 | 4 | 3 | 5 | 3 | 1 | 0 | 0 | 22 |
东部竖切变 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 1 | 1 | 0 | 0 | 4 | |
西部横切变 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
西部竖切变 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
2000 | 东部横切变 | 0 | 0 | 2 | 1 | 1 | 3 | 3 | 5 | 4 | 1 | 0 | 1 | 21 |
东部竖切变 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 2 | |
西部横切变 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
西部竖切变 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
2001 | 东部横切变 | 1 | 1 | 2 | 1 | 4 | 3 | 5 | 5 | 1 | 1 | 1 | 0 | 25 |
东部竖切变 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 5 | |
西部横切变 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
西部竖切变 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
2002 | 东部横切变 | 0 | 1 | 1 | 0 | 3 | 3 | 7 | 3 | 5 | 1 | 0 | 1 | 25 |
东部竖切变 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 2 | |
西部横切变 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
西部竖切变 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
2003 | 东部横切变 | 2 | 0 | 0 | 2 | 7 | 2 | 2 | 4 | 4 | 0 | 0 | 1 | 24 |
东部竖切变 | 0 | 1 | 1 | 0 | 1 | 0 | 1 | 2 | 1 | 1 | 0 | 0 | 8 | |
西部横切变 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | |
西部竖切变 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
2004 | 东部横切变 | 0 | 1 | 2 | 2 | 3 | 6 | 9 | 6 | 2 | 4 | 1 | 0 | 36 |
东部竖切变 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 2 | |
西部横切变 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 0 | 3 | |
西部竖切变 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
2005 | 东部横切变 | 1 | 0 | 3 | 3 | 4 | 6 | 2 | 4 | 7 | 4 | 0 | 0 | 34 |
东部竖切变 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | |
西部横切变 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
西部竖切变 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |