Examples of fitted spectra; the fit results in the legends have units [counts/(day 100 ton)]. (a): A Monte Carlo based fit over the energy region 270–1600 keV to a spectrum from which some, but not all, of the events have been removed using a PSA cut, and in which the event energies were estimated using the number of photons detected by the PMT array. (b): An analytic fit over the 290–1270 keV energy region to a spectrum obtained with statistical subtraction and in which the event energies were estimated using the total charge collected by the PMT array. In all cases the fitted event rates refer to the total rate of each species, independently from the fit energy window (from [129]).
