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 1.908m to data values up to 1976 to refer to RLR (1964)
Add 2.519m to data values 1977 onwards to refer to RLR (1964)
RLR (1964) is 11.5m below BM No. 1