=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 11-JUN-91 :
Pointe du Chene     970/036 RLR(1978) is 10.3m below BM HS 1940
=========================== BENCHMARK INFORMATION UPDATE ADDED  12-JUL-93 :
Pointe du Chene     970/036 RLR(1978) is 10.3m below BM HS 1940
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 02-NOV-93 :
Since 1980 monthly means received from Canadian authority are in cm.

