Starting at 30 o F plot isotherms every 10 o F. For each station the temperature is recorded in the upper left. For example, it was 57 o F in Las Vegas at 1500 Z (7AM PST) on March 26 2003. Using different colors color in the space between 30 o F and 40 o F, 40 o F and 50 o F, …. to make your map look like one you’d see in a weather report in USA Today.