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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 11.217m to data values 1887-1936 to refer to RLR
Add 4.786m to data values 1937-1999 to refer to RLR
Subtract 2.000m from data values 2000 onwards to refer to RLR
RLR is 8.000m below primary benchmark BM a