=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 07-Feb-1996
data received from TOGA centre
replaces Port Victoria
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 15-Oct-1996
instrument type: Float/well, Handar 436-A, Encoder 436-B
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 09-Dec-2004
Pt. La Rue          442/007 RLR(2003) is 9.064m below BM UH1
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 15-Oct-2013
Complete UHSLC dataset 1993-2012 downloaded onto database.
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 03-Nov-2015
Complete updated JASL UHSLC data loaded onto the database. Data supplier has been changed from Directorate of Civil Aviation to UHSLC
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 06-Jan-2016
Using the UHSLC levelling sheets the RLR diagram has been revised. The original Primary benchmark UH -1 3.064m above the datum was derived from a publication by the Ministry of the Enviroment Seychelles. This correlates reasonably well - within 1-2mm with the value on the UH levelling sheet for levelling carried out between 1999 and 2002. In the 2008 levelling the Primary benchmark was changed to UH -4 3.647m above the datum this was superceded in 2013 by Primary benchmark RS2 1.417m above the datum. Both these Primary benchmarks have been added to the diagram with the primary now being nominated as RS2.