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 4.325m to data values 1972-1991 to refer to RLR
Add 4.336m to data values 1992 onwards to refer to RLR
RLR is 9.400m below primary benchmark Attach-26