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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 3.306m to data values 1984-1993 to refer to RLR
Add 3.312m to data values for 1994 to refer to RLR
Add 3.306m to data values 1995 onwards to refer to RLR
RLR is 10.800m below primary benchmark B0169