=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 23-Mar-1994
Data up to 1991 revised, March 1994
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 12-Jul-1994
Probable datum shift in the early 1940s.
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 15-Jul-1994
Vancouver           822/071 RLR(1989) is 10.9m below BM 4
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 07-Sep-2011
Using data from Fisheries and Oceans Canada the RLR diagram has been updated. The Primary benchark remains 4 6.888m above TGZ last inspected 2006. The previously displayed benchmark T.S. 12.849m above TGZ is no longer 'active' and has been omitted from the diagram.
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 27-Jul-2015
This year, rather than just sending the latest year of data, the complete dataset has been supplied. This has highlighted some differences in the data. From communications in the correspondence file for 2002 it appears that the Oceans and Fisheries meant to supply revised data for the stations supplied. This did not happen. The complete dataset includes these data revisions. Therefore, the whole dataset has now been re-entered.