In the first implementation of the ILSA, the algorithm output was a pair of composite scores titled "FPIE" (fraction of peak intensity explained) and "RevMF" (reverse match factor) for every potential library match. These composite scores were non-linear combinations of several underlying metrics. Through discussion with other ILSA users, it became clear that presenting composite scores actually complicates the interpretation process and thus an analyst's confidence when making presumptive identifications. With explainability being important in science and engineering, and vital to our primary application area (forensic seized drug analysis), we have updated the ILSA to now present a complete set of up to 14 metrics depending on the number of fragmentation spectra available for the mixture. Five of the 14 metrics are described in Table , with the 'average' metrics being simple arithmetic averages of the underlying metric computed with varying fragmentation spectra. For example, the ILSA computes up to three individual FPIE values between the appropriate mixture and library spectra, and the "Average FPIE" is the arithmetic average of those values-up to 4 FPIE values are computed.