This validation case uses the first few values of a borehole
temperature reponse time series to construct the weighting factors
kappa. The aggregation cells are chosen such that
there is a change in levels (and therefore a doubling in the size
of the cells) from cell 5 to 6. Therefore, kappa[5] is
lower than kappa[4] and kappa[7] is lower
than kappa[6], but kappa[6] is higher
than kappa[5].