Internal function used in calculating the partitions of variance in eFAST
efast_cvmethod(si, range_si, sti, range_sti, OUTMEASURE, NUMPARAMS,
NUMCURVES, NUMOUTMEASURES)
Amount of variance partitioned to each parameter
Range of the Si values across all curves
Amount of variance accounted for by non-linear effects with other parameters, for each parameter
Range of the STi values across all curves
Simulation output measure being analysed
Number of parameters in the simulation
Number of resample curves being examined
Number of simulation output measures in total