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].