Link to RLR information.
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 10-May-2012 : Porto Garibaldi , Comacchio, Ferrara - Italy is a new station. The monthly mean sea level data values have been supplied by Alberto Pellegrinelli from the University of Ferrara.Primary benchmark is TGBM0 3.538m above Tide Gauge Zero (TGZ). Also at the tide gauge is benchmark 0169#-###-38# referenced as 1.946m above the Italian National Datum System IGM. Station has now been made RLR with factor 6.863m.
Department of Engineering University of Ferrara Via Savonarola 9-44121 Ferrara ITALY