We go through some of the Data derived from the Tide Guage in the Docks in Galway.
Coordinates -   53.269,  -9.048

We start on the first of January of each year and finish at the end of December of the same year.
There are 2 Tide Guages in the Docks - one is an old physical one with Wall markings while the other is an electronic type. This modern version  updates every six minutes or so.
The Sea Level Height is in Metres.
0.1 of a Metre is 100 millimetres.

2007 is not a full year - Data collection begins on March the 15th, and we continue from there to the end of that year.

 From 2008 to 2018, the average of the averages, is 3.432 (11.25696 Feet)

2019, is not yet over, so we wait.

 

LAT - Lowest Astronomical Tide

Year   Average Height (m) Feet Data Points - number of measurements, by year Total Data points to date. High Low
2019 3.3779          
2018 3.4416 11.288448  75,765 991,473    
2017 3.4156  11.203168  81,663      
2016 3.4708  11.384224  87,516      
2015 3.3892  11.116576  87,334      
2014 3.4124  11.192672  85,993      
2013 3.4075  11.1766  80,215      
2012 3.4043  11.166104  87,052      
2011 3.4413  11.287464  86,952      
2010 3.4160  11.20448  87,264      
2009 3.4467  11.305176  77,628      
2008 3.4106  11.186768 86,476      

2007 
NOTE.

Incomplete.

This is from March the 15th, through to Dec. 31st.

3.3117  10.862376 67,615      

There are 525600 minutes in a calendar year, so there would ideally be 87,600 data points per year?

oceanenergyireland

Rising Sea Levels in Galway, 2019

Updated to include all of 2019, in the following Pdf. Download.