Combination Charts for Monthly Temperatures.

I was perusing the Sunday paper recently, and came across a chart which summarized the past month's temperatures. It's an informative chart, which compares each day's minimum and maximum temperature with the normal range and the historical minimum and maximum temperatures for each date. I've seen similar charts many times, including this same design in the local paper, but this time the chart called out to me, and I had to build it myself. Below are links to three versions of this chart.

Column Chart for Positive Temperatures

Column Chart for Positive and Negative Temperatures

Area Chart for Positive and Negative Temperatures