Revised Local Reference (RLR) Diagram for PORTSMOUTH

Station ID: 350

RLR diagram based on the information in the datum section below

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.

Datum information

Add 4.814m to data values up to 1964 to refer to RLR (1971).
Add 4.21m to data values 1965-1979 to refer to RLR (1971).
Add 4.193m to data values 1980 onwards to refer to RLR (1971).
RLR (1971) is 10.2m below TGBM SU 6269 0053

Ellipsoidal information from SONEL (explanation)

RLR Height above ellipsoid:38.889 ± 0.010 m
Vertical Land Movement Rate:0.04 ± 0.23 mm/yr
Epoch:2007.6799
GPS Solution:ULR6
GPS Site Used:PMTG
GPS Availability:2001-09-25 to 2016-10-09