Donate
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 9.885m to data values 1884-1945 to refer to RLR
Add 10.200m to data values 1946 onwards to refer to RLR
RLR is 10.200m below primary benchmark BM