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If the image above appears blurry, or you would like to see a larger image, please view the full-sized image of the RLR diagram.
Add 5.682m to data values 1948-1949 to refer to RLR
Add 5.070m to data values 1985-1988 to refer to RLR
Add 5.682m to data values 1989 onwards to refer to RLR
RLR is 9.500m below primary benchmark No.1 (1948)