# Math lab tool for calculating of Tide

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Answered: Abdulla on 20 Aug 2023
I have 12 years of 1 min frequency tide/sea level data. Is there any tool box to calculate, Highest Astronomical tide level , Mean high water spring ,mean high water neap, mean low water neap, mean high water spring, lowest astronomical tide level, Seasonal variation. Highly appreciate your quake response.

Gabriel Ruiz-Martinez on 9 Jul 2021
Hi Indika,
if you have a water level record of 12 years, you can use the Rich Pawlowicz's T-Tide Matlab toolbox to analyze your data.
I little late, but I hope this toolbox can be useful to other people, interested in tides.
Siegmund Nuyts on 19 Dec 2022
Hey, I'm just checking the T_Tide toolbox.
How can I get the basic parameters (high tide, low tide, mean high spring, ...) from this?
Edited: indika kathaluwa weligamage on 20 Dec 2022
The programe generated result shows as following, tide freq , amp , amp_err , pha , pha_err , snr,
Then you have to calculate using each componant S2,M2,K1,O1.....etc, 2(m2+S2) = Spring, 2(m2-S2)= Neap, form factor =ratio of K1+o1 to m2+s2, please read : Hicks, S. D. (2006). Understanding Tides. Physical Ocean for Operational oceanographic Product and Service, National Oceanic and Atmospheric Administration, National Ocean Service., U.S.A

Haidong Pan on 23 Dec 2021
You can also try newest S_TIDE toolbox (https://ww2.mathworks.cn/matlabcentral/fileexchange/75532-a-non-stationary-tidal-analysis-toolbox-s_tide)
Mac on 2 Mar 2022
Thank you for this.

Abdulla on 20 Aug 2023
Look for Tide Peaks Toolbox published very recently.