Please note: In many cases, the station position in our database is accurate
to only one minute. Thus, the tide gauge may not appear to be on the coast.
Boucau 190/139 RLR(1993) is 13.2m below BM NGF no. 22
Documentation added 2014-09-24
Using figures from the SONEL website the latitude and longitude values have been revised.
Documentation added 2014-09-29
When downloaded from the SONEL website there is a lot more data values for 1969-1991. Existing values were either the same or just 1mm different. The whole dataset has been entered onto the database.