Tide predictions are given for the next six months. Decide which month you are going to chart then, using your mouse, select the data for that month onscreen. In your spreadsheet program, make a chart of high and low tides plotting the days of the month against the tide predictions. Compare the high tides for each of the locations. Look at maps for each of the areas and form a hypothesis for why these tides reach different heights.
Tides are cyclical and closely follow the phases of the moon.
During the new and full moons, the distance between the high and low tides increases, which means that high tides get higher and low tides get lower. Use your chart to predict when the new moon or full moon will occur. Check your predictions by looking up moon phase data for the month you plotted at the US Naval Observatory's moon illumination page.