Spirit measurements require explicit denominators and ratio orientation

Table 2 phenolic/furan and Table 4 ion concentrations are mg/dm3; Table 3 volatile concentrations are mg/dm3 absolute alcohol except methanol percentages. Table 3 uses 2-methylbutanol/3-methylbutanol while the introduction discusses its reciprocal.

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Checked against all seven supplied pages and rendered tables. Verification means faithful source representation, not independently validated analytical truth.