Revised Local Reference (RLR) Diagram for MOMMARK

Station ID: 271

RLR diagram based on the information in the datum section below

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Datum information

Add 6.919m to data values 1925-1955 to refer to RLR
Add 6.919m to data values 1957 onwards to refer to RLR
RLR is 22.700m below primary benchmark G.I. 1629