Details of 19 pairs of GC-FID and GC-MS peaks matched for KI and sex-specific abundances in S06 males.

Six of these peaks which showed significant differences among lines in Figs 1 or 2 are indicated with asterisks. The Rts, GC-FID KIs, GC-MS KIs and confirmed or tentative identifications are given. As per Table 2, Rts for peaks classified as intermediate in abundance are underlined while those rated minor in abundance are not. None of the 19 peaks were rated as major in abundance. See S3 Fig for the mass spectra for these 19 peaks and S1 Table for the imputed KIs of all the other GC-FID peaks. As S4 Table shows, a twentieth GC-FID peak, Rt 18.42 and imputed KI 1783, was matched to a GC-MS peak but it had already been identified from a standard in the GC-FID runs and was unavailable for use as a GC-MS standard.