Revised Local Reference (RLR) Diagram for LERWICK

Station ID: 830

RLR diagram based on the information in the datum section below

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Datum information

Add 6.036m to data values 1957-1964 to refer to RLR
Add 6.950m to data values 1965-1979 to refer to RLR
Add 5.730m to data values 1980 onwards to refer to RLR
RLR is 10.300m below primary benchmark HU 4783 4129

Ellipsoidal information from SONEL (explanation)

RLR Height above ellipsoid:42.340 ± 0.007 m
Vertical Land Movement Rate:0.46 ± 0.28 mm/yr
GNSS Solution:ULR6b
GNSS Availability:2005-08-19 to 2015-02-16