In the Columbia Gas of Ohio study that forecasted the demand for gas (see p. 155), the company developed the following coefficients for their equation:
Growth rate......................................... .015
Intercept..........................................1376.0
Forecasted temperature...........................-17.1
Prior day temperature..............................-3.7
Forecasted wind speed..............................4.2
Forecast the demand for gas for a day, when the expected average temperature will be 40 degrees, the prior day's average temperature was 37, and the average wind speed is predicted to be 8 miles per hour.