=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 23-Feb-2001
Sejingkat           663/021 RLR(1997) is 10.3m below BM no. 10001
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 19-Sep-2012
Publication Tidal Observation Records 2010 confirms that the Primary benchmark
remains BM No. 10001 8.983m above TGZ.
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 21-Nov-2012
There is no monthly mean data for Sejingkat 2011 as the data contains many
errors.