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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 10.414m to data values 1889-1936 to refer to RLR
Add 5.005m to data values 1937-1999 to refer to RLR
Subtract 0.100m from data values 2000 onwards to refer to RLR
RLR is 9.900m below primary benchmark BM a