Before 1978 values based on readings of high and low waters
Genova is an historic station last data 1997
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 06-Aug-1992
Italian levels may be influenced by the Messina earthquake of 1908 - See Bottari et al., Tectonophysics 202, 269-275, 1992
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 17-Mar-1993
The stations Porto Maurizio (250/001), Napoli Arsenale (250/041) and Napoli Mandraccio (250/051) appear to each have a datum shift around 1910. Evidence for regional coherence?
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 22-Apr-1994
Data for 1979-88 revised April 1994
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 14-Jul-1994
Anomalously large value for December 1989 queried with authority.
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 07-Dec-1998
For a discussion of land movements in the area of the Gulf of Naples, see the paper by G.Berrino in Tectonophysics,294,323-332,1998.
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 28-Apr-1999
1989 revised, 28th April 1999
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 25-Jan-2000
Genova              250/011 RLR(1963) is 10.2m below BM
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 22-Jan-2016
A value of MTL-MSL=-2 mm has been applied to the RLR data for the period 1884-1977. The values were derived using the GESLA2 (high-frequency tide gauge) dataset using harmonic constituents.
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 22-Nov-2022
Data between 2014-2017 are not included in the RLR dataset as they are interpolated from a nearby radar station
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 20-Jan-2023
After the supplier provided further information, data for 2011-06, 2014-03 to 2017-08 and 2017-10 have been granted RLR status but the data points have been flagged. The supplier has explained that during these periods, gaps in data from the float gauge have been filled in using data from a nearby radar sensor. These gaps are typically between 12 and 24 hours long. There are small differences between the two sensors, typically a few millimetres, but rarely above a centimetre. For each period filled, the 24 hours before and after the gap have been used to calculate an adjustment to apply to the data.