=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 19-Oct-1993
Lusi                610/032 RLR(1991) is 11.4m below BM
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 23-May-1994
1961,1963-74 data received from TOGA office
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 23-May-1994
Data 1961-69 has some missing days but no details are known.
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 27-Jun-2012
Benchmark TGBM (old) is an historic benchmark superceded by LZBM 1973-80 this was replaced by TGBM (new).