Occam’s razor-based deconvolution of the subset of signals associated with the C_nH_mO species as detected by the DFMS on 3 August 2015. The measured signals (ms) are given in arbitrary units (a. u.) with 30% error margins. With the color coding, we show the different contributions of the individual molecules to the observed sum fragmentation pattern of the C_nH_mO species (see the main text for details). The following 36 molecules were selected: (1) carbon monoxide, (2) formaldehyde, (3) methanol, (4) ketene, (5) acetaldehyde, (6) dimethyl ether, (7) ethanol, (8) 2-propynal, (9) 2-propenal, (10) acetone, (11) propanal, (12) isopropanol, (13) n-propanol, (14) furan, (15) 2,3-dihydrofuran, (16) butanal, (17) tetrahydrofuran, (18) 2-butanol, (19) 2,4-cyclopentadiene-1-one, (20) 2-methylfuran, (21) 2,3-dihydro-4-methylfuran, (22) tetrahydropyran, (23) 1-ethoxypropane, (24) 2-methoxy-2-methylpropane, (25) phenol, (26) 2,5-dimethylfuran, (27) 3-methoxycyclopentene, (28) benzaldehyde, (29) benzyl alcohol, (30) 2,3,5-trimethylfuran, (31) 2-methylcyclohexanol, (32) benzofuran, (33) 4-methylbenzaldehyde, (34) ethoxybenzene, (35) 6-methyl-3,5-heptadien-2-one, (36) 2,6-dimethylcyclohexanone, (51) carbon dioxide, (54) acetic acid, (55) glycolaldehyde, (56) methyl formate, (59) propanoic acid, (76) hydroquinone, (77) benzoic acid. For referencing and to distinguish the two populations, the selected C_nH_mO molecules have been given numbers below 50, while C_nH_mO₂ molecules were given numbers above 50. Some of the latter produce relevant C_nH_mO fragments, which we show in this figure and have thus listed.