Revised Local Reference (RLR) Diagram for PORT LYTTELTON

Station ID: 247

RLR diagram based on the information in the datum section below

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Datum information

Add 6.304m to data values 1923-1964 to refer to RLR
Add 5.999m to data values 1995 onwards to refer to RLR
RLR is 10.400m below primary benchmark UD 40