Each bar in the graph represents a 15 minute interval.

You may have to hold down the Shift key (Netscape) or Control key (Internet Explorer) when reloading the page to ensure you don't get a cached copy.

The graphs show windspeed from 0 to 30 knots, the darkest horizontal axis represents 15 knots.

The numbers to the right of the graph are the maximum and average from the most recent reading. Click on the graphs to get a longer period