Here is an excerpt of a Tide Table. In the first line you see the name of the standard port and where it is located. In the second line information is provided about the time zone in which the times of high and low water are calculated and the coordinates of Portsmouth. In the third line you find the month and the year from which times and tides are calculated. On the left side the day of the month. On the right side you will find times and heights of the tide.