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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 5.422m to data values 1955-1958 to refer to RLR
Add 5.635m to data values 1959-1965 to refer to RLR
Add 5.635m to data values 1983 onwards to refer to RLR
RLR is 11.900m below primary benchmark GTS SBM 1955