This bar chart shows the forest fire hotspots for 1999. The horizontal axis indicates the date from May 1st to September 30th. Each month has three bars representing ten-day periods. These periods are numbered: 1 to 10, 11 to 20, and 21 to 30 (or 31). The vertical axis represents the number of hotspots, with values ranging from 0 to 3000. Most hotspots occurred in the period August 1 to 10. There were also high counts for the June 11 to 20, May 1 to 10, and August 11 to 20 periods. The month with the fewest hotspots is September. The approximate values are as follows: May 1 to 10, 1900 hotspots; 11 to 20, 150 hotspots; and 21 to 31, 650 hotspots. June 1 to 10, 650 hotspots; 11 to 20, 2100 hotspots; and 21 to 30, 1500 hotspots. July 1 to 10, 1100 hotspots; 11 to 20, 1750 hotspots; and 21 to 31, 1450 hotspots. August 1 to 10, 2850 hotspots; 11 to 20, 1950 hotspots, and 21 to 31, 800 hotspots. September 1 to 10, 100 hotspots; 11 to 20, 150 hotspots; and 21 to 30, 125 hotspots.