(Table 2) Major terrestrial n-alkanes
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b: CPI27-33 = 0.5 * Sum(X27-X33)/(X26-X32) + 0.5 * Sum(X27-X33)/(X28-X34), where X is abundance.c: ACLn-m = Sum(i * Xi)/RXi, where X is abundance and i ranges from n to m.
b: CPI27-33 = 0.5 × Σ(X₂₇至X₃₃)/(X₂₆ - X₃₂) + 0.5 × Σ(X₂₇至X₃₃)/(X₂₈ - X₃₄),其中X为丰度(abundance)。 c: ACLₙ₋ₘ = Σ(i·Xᵢ)/R_Xᵢ,其中X为丰度,且i的取值范围为n至m。



