D8: Array;
The D8 property returns final variant of unmodified S-I differences or ratios. Values of the D7 series are subtracted from the C19 series (additive model), or in the multiplicative model values of the C19 (or B1, if the working days adjustment is not applied) are divided by values of the D7 series. Then the series is to be subjected to monthly or quarterly variance analysis to check whether persistent significant seasonality is available.
See also: