Revised Local Reference (RLR) Diagram for HEL

Station ID: 146

RLR diagram based on the information in the datum section below

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Datum information

Add 3.295m to data values 1901-1915 to refer to RLR
Add 5.310m to data values 1931-1938 to refer to RLR
Add 1.947m to data values 1965-1966 to refer to RLR
RLR is 10.200m below primary benchmark BM Church

Data

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Revised Local Reference (RLR) Diagram for HEL

Station ID: 146

Datum information