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Fig. 4

The aromatic, fXsp2 (red), olefinic, (1 − f)Xsp2 (orange), total sp2, Xsp2 (grey dashed), aliphatic, Xsp3 (blue) and CH3, φXsp3 (black dashed), carbon atom fractions as a function of XH for the best-fit eRCN model (Eq. (52)).
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