If box ''Time averaging'' is not checked then the time averaging is not performed and the data corresponding the field ''Start date'' are displayed.
Otherwise the time averaging is performed for the time interval defined by fields 'Start date'' and 'End date''. There are two types of averaging - continuous and seasonal. In the first case the data are simply averaged between given dates. The seasonal averaging is calculated by two step procedure – firstly calculated seasonal average for the every year defined by the fields ''Start year'' and ''End year'' and the season is defined by the fields ''Start month'' and ''End month''.( It is possible to set ''Start month'' larger than ''End month'', for example winter average is defined by values 12 and 2). On the second step multi year seasonal average is calculated for the the given years interval.