Figure 5: Extracted ion chromatograms, m/z 57.0, 91.0, 105.0, 134.0, 142.0. A = activated
carbon strip located outside at T = 0, B = exhaust from 1984 Geo Metro, C = exhaust from
1991 Chevy truck, D = 50% weathered gasoline.

Figure 5 is four separate line graphs, labeled A, B, C, and D. A, B, and C are similar to Figure 3 with the area after 3 minutes more prominently spiked. D has a multi-spiked area from time 3 to 3.4 minutes, then higher spikes gradually diminishing from 4 to 7 minutes.

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