Fig. 3. Long-term apparent sea level rate of group 1B tidal stations. The Ko Sichang time series ended in 2002 because the station was closed down and operations moved to a new
tide gauge at Laem Chabang deep-sea port. Dotted vertical lines in the right of all sub-figures mark the time when the Sumatra-Andaman earthquake occurred on 26 December 2004.
Observations have been color-coded according to their final weight in the robust fit (weights of outliers are zero).