Data prior to 1970 based on 24 redaings per day
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 11-Jun-1991
Mokuoloe Island     760/041 RLR(1969) is 8.4m below BM7
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 24-Nov-2011
Using information from the NOAA website the RLR diagram has been revised. Primary benchmark is now NO 1 1957 1.969m above gauge datum. This benchmark appears on the original RLR diagram as a secondary benchmark with the same value. Previous Primary benchmark NO 7 1968 is included in the NOAA report for 2000 with a value of 2.657m relative to the gauge datum but does not appear in the NOAA report of 2003.