SEASON statistics < / options > ;
You can use a SEASON statement to specify seasonal statistics and options that are related to seasonal analysis of the time-stamped transactional data. Only one SEASON statement is allowed. The options affect all variables specified in the VAR statements. Seasonal analysis can be performed only when the length of the seasonal cycle specified by the SEASONALITY= option in the PROC TIMESERIES statement or implied by the INTERVAL= option in the ID statement is greater than 1.
You can specify the following seasonal statistics:
number of observations
number of nonmissing observations
number of missing observations
minimum value
maximum value
range value
summation value
mean value
standard deviation
corrected sum of squares
uncorrected sum of squares
median value
If you do not specify any of the seasonal statistics, then the default is as follows:
season n min max mean std;
You can also specify the following options after a slash (/):