Revised Local Reference (RLR) Diagram for HEYSHAM

Station ID: 936

RLR diagram based on the information in the datum section below

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Datum information

SUBTRACT 2.285m from data values up to 1974 to refer to RLR (1986)
Add 1.802m to data values1975 onwards to refer to RLR (1986)
RLR (1986) is 13.9m below TGBM SD 4030 6012