When you click on the green + symbol in a Tide Table, this page appears:

- Height: Enter the height for a single entry on a tide table.
- Unit: If local tide tables are published in a unit other than your your customary units, you may change that here by clicking on the blue unit indicator. Choose from the following in the drop-down list: Meters, Feet, Fathoms.
- Time: Tide table time for that height
- Type: choose from High or Low tide
- Add: This button will turn blue once you’ve filled in the information. Clicking this saves it and returns you to the list.