Possible datum shift in RLR record at around 1940.
Documentation added 1993-07-12
Cristobal 904/011 RLR(1964) is 8.8m below PBM 1A Cristobal
Documentation added 1995-09-08
See comments for CCODE = 840 concerning sea level difference either side of the Panama Canal.
Documentation added 1999-05-17
Cristobal data were considered to be affected by problems with automatic tide recorders in the early 1970s and several years of MSL look high compared to nearby stations e.g. Cartagena. Station moved to Coco Solo (PSMSL code 904/006) in October 1980.
Panama Canal Commission Engineering Division Unit 2300 Apo AA 34011-2300