This program takes the last 20 years of data (or less if there is not that much data) and divides it into two equal time periods. Then a seasonal is made from each time period and both are plotted.

1. Pick a commodity and a month.

2. Select the chart type. The jpegs are faster; the applets are interactive (zooming in is possible and there are data popups).

3. Press "Get Chart". There's a lot of data to download, so be patient.

This is a limited set of commodities available to nonsubscribers. Subscribers can access data for over 40 commodities.