Data and code for: Evidence Before Optimization: Maintenance Prioritization by Evidence Sufficiency in Compressed Air Systems

Anonymized machine-level flow records (M01–M08) from one industrial plant and the complete analysis code for the article "Evidence Before Optimization: Maintenance Prioritization by Evidence Sufficiency in Compressed Air Systems". The code reproduces the evidence-sufficiency results and D-codes (Table 7), the comparative GMM/BIC analysis, Tables 8–12, and the sensitivity analyses. Input checksums are verified before execution. Records use relative time and contain no plant, machine, or location identifiers.