Revised Local Reference (RLR) Diagram for HELSINKI

Station ID: 14

RLR diagram based on the information in the datum section below

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Datum information

For data 1879-1903 add 7.087m to data values to refer to RLR (1964).
For data 1904- add 5.120m to refer to RLR (1964).
RLR (1964) is 9.601m below TGBM 7HB