Pydro tidal corrections

Support Contact: Anthony Klemm, NOAA Office of Coast Survey
 anthony.r.klemm@noaa.gov 

For use outside the United States, the CSB Processing tool has an option to use a global tide model (AVISO+ FES2022b) to resolve/correct depths to approximate Lowest Astronomical Tide (approx LAT). 

Inside United States waters, it is recommended (but not required) to use the Discrete Tide Zoning model option instead.

Perform the following steps to process CSB data extracted from NCEI/DCDB to correct for tides and data-derived vessel transducer offset values:

1. You will need to download the Pydro software here.
2. Follow the Data Extraction instructions to retrieve the data you want to process.
3. When you receive the email link from NCEI, download the data and save it in an appropriate location.
4. Open Pydro, navigate to the 'BETA/EXPERIMENTAL' section of the Applications pane, and select 'CSB Processing.'
5. a