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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 6.184m to data values 1977-1980 to refer to RLR
Add 6.148m to data values 1981-1983 to refer to RLR
Add 6.184m to data values 1984 onwards to refer to RLR
RLR is 8.700m below primary benchmark BM UH-1