=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 23-Mar-1994
data up to 1991 revised, March 1994
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 15-Jul-1994
Port Renfrew        822/106 RLR(1987) is 10.0m below BM 1,1957
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 20-Apr-2000
Port Renfrew discontinued 1997

