Donate to PSMSL
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 3.875m to data values 1937-1943 to refer to RLR
Add 3.741m to data values 1945 onwards to refer to RLR
RLR is 9.700m below primary benchmark 66 / 1