Find the mean, median, and standard deviation of Heating Degree Days (HDD), broken down by Season, for the 48 contiguous states location (code 5999). (Ignore the first and last rows for the given location, the ones that contain -9999, the code for missing values.) Round your answers to two decimal places, if necessary. 48 states HDD (Fall) HDD (Spring) HDD (Summer) HDD (Winter) One Variable Summary HDD 5999 Sata HDD 5999 Data HDD 5999 Data HDD 5999 Data Mean Std. Dev. Median