Beginning of meandering | Ending of meandering | Duration time |
Aug. 1975 | Mar.1980 | 4 years and 8 months |
Nov. 1981 | May. 1984 | 2 years and 7 months |
Dec. 1986 | Jul. 1988 | 1 year and 8 months |
Dec. 1989 | Dec. 1990 | 1 year and 1 month |
Jul. 2004 | Aug. 2005 | 1 year and 2 months |