Detection is not prevention: sensing and protective capacity are complements when protection is a series of filters

Research Report. A concentration threshold is a projection of an exceedance probability, not a policy: 242 published 60-minute AEGL values cannot be uniquely read as a policy. When protection is a series of filters, sensing and protective capacity are complements below a crossover set by the exposure distribution, and substitutes above it. This record contains the manuscript (DOCX/PDF/Markdown), figures 1-4 and figs. S1-S9 (600-dpi PNG and vector PDF), the Python analysis code, and the result files, including the audited AEGL records. No empirical health data are used.