NOTE: If some of the data are red in the plots above, the 'flag for attention' is set. Please see the documentation below.
Link to RLR information.
ALL DUTCH METRIC DATA ARE MEASURED TO NAP (NORMAAL AMSTERDAMSCH PEIL) PRIOR TO 1936 VALUES BASED ON HIGH AND LOW WATERS OR ON 4 OR 8 READINGS/DAY =========================== FOLLOWING PSMSL DOCUMENTATION ADDED 10-Feb-2011 From information received regarding the values of NAP pre. and post the re-levelling of 2005 the station has now been made RLR. RLR factor pre.2005 6.775m 2005 onwards 6.799m. =========================== FOLLOWING PSMSL DOCUMENTATION ADDED 22-Jan-2016 The note above stating periods of the data are MTL is misleading. Sections of the original data were MTL. However, Pub. Sci. 5 states “For these periods a shallow water correction has been added to the mean heights of high and low water in order to give a mean height of sea-level comparable with those otherwise calculated for other periods.” Thus, a correction to MSL has already been applied.
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