=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 12-Jul-1993
Penang Port         550/003 RLR(1988) is 9.2m below BM No. P0001
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 19-Sep-2012
From the publication Tidal Observation Records 2010 the Primary benchmark has
changed from BM P0001 to BM P0379 4.962m above TGZ.