Table 1.

Linear trends (day/decade) in the timing of the storm surge season at each station, computed with two different methods, the GEV analysis (method 1) and the non parametric statistics (method 2) between 1950 and 2000. Non significant trends are marked with dash. Standard errors are $1\sigma$.

Northern stations
Stations	Tregde	Cuxhaven	Dover	Esbjerg	Immingham	Mean
Method 1	3.9 ± 0.3	2.3 ± 0.2	1.8 ± 0.3	5.3 ± 0.4	0.8 ± 0.3	2.8
Method 2	4.2 ± 0.4	4.2 ± 0.7	3.1 ± 0.7	3.9 ± 0.6	5.0 ± 0.5	4.1

Southern stations
Stations	Brest	La Coruña	Newlyn	Santander	Vigo	Mean
Method 1	− 2.0 ± 0.4	− 5.0 ± 0.5	–	–	− 5.1 ± 0.3	− 4
Method 2	− 6.5 ± 0.5	− 7.7 ± 0.5	− 2.0 ± 0.7	− 7.1 ± 0.5	− 9.1 ± 0.6	− 6.5