Revised Local Reference (RLR) Diagram for PORTPATRICK

Station ID: 1215

RLR diagram based on the information in the datum section below

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Datum information

Add 4.960m to data values 1968-1975 to refer to RLR
Add 4.890m to data values 1976-1977 to refer to RLR
Add 4.873m to data values 1978 onwards to refer to RLR
RLR is 11.700m below primary benchmark NW 9976 5421