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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 6.500m to data values for 1967 to refer to RLR
Add 6.500m to data values for 1974 to refer to RLR
Add 6.500m to data values 1975 onwards to refer to RLR
RLR is 9.309m below primary benchmark A