=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 11-Jun-1991
Port Taranaki       690/081 RLR(1988) is 11.8m below New Plymouth BM
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 20-Jun-1995
1992: apparent datum change.  Authority have confirmed that no change in datum was made and gauge malfunction is thought likely.
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 17-Jan-2003
New data from John Hannah added 17/01/03 which supercedes old data. New data does not have any missing days information.Old data has been backed up.
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 17-Jan-2003
New data from John Hannah was for Auckland II, Dunedin II,Lyttelton II and Wellington II.
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 17-Oct-2005
There is a new John Hannah paper referring to New Zealand data for Wellington, Dunedin, Lyttelton and Auckland. The reference is: "An updated analysis of long-term sea level change in New Zealand." Geophysical Research Letters, V31, L03307, doi:10.1029/2003GL019166 (2004). DATA PRIOR TO 1984 SUPPLIED BY AUTHORITY 53
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 01-Oct-2008
Revised data received from Glen Rowe at LINZ data span 1984-2007. Previous data from database 1984-1995 copied and replaced with revised dataset.
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 12-Jul-2016
Historic data 1955-1983 have been supplied by LINZ these have been added to the database.
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 28-Jun-2018
The Kaikoura earthquake at 23:02 on 13th November 2016 impacted on a number of stations in the central part of New Zealand. Because of this the hourly values for several stations from 14th November 00:00hrs have been adjusted by LINZ. For station Port Taranaki  the adjustment is -0.012m.
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 25-Aug-2020
The adjustment due to the Kaikōura earthquake of 2016 has been removed as relative sea level series should include land movement.
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 23-Aug-2021
A revised copy of the New Zealand data values for Port Taranaki has been received from the data supplier the Land Information New Zealand (LINZ). The revised data begins from 2014. This exercise has been carried out to correct some anomalies with the high frequency data.
Adjustment has also been applied to the data to account for the Kaikoura earthquake by creating a new datum TGZ December 2016 6.709m below benchmark New Plymouth Fundarmental BM.
Consequently the Metric data has had the effect of Kaikoura removed but the effect of the earthquake is still evident in the RLR data.