=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 25-Apr-2000 Boucau 190/139 RLR(1993) is 13.2m below BM NGF no. 22 =========================== FOLLOWING PSMSL DOCUMENTATION ADDED 24-Sep-2014 Using figures from the SONEL website the latitude and longitude values have been revised. =========================== FOLLOWING PSMSL DOCUMENTATION ADDED 29-Sep-2014 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.