Indian sources publish thresholds for this bin, so it is the easiest to test. ICAR-DMR states false truffle manifests above 23 °C; NHB's model DPR adds the working ceiling, avoid 26 to 27 °C in spawn run and after casing, and keep cropping below 18 °C. NHB says bacterial blotch is favoured above 20 °C with relative humidity above 85 percent; ICAR-DMR adds the 3-hour limit for water on caps.
Compost chemistry has bands too. ICAR-DMR gives pH 7.2 to 7.8; below it green mould is favoured, above it white plaster mould. Compost wetter than 72 percent at spawning invites plaster moulds; NHB links weepers to compost below 64 percent under wet casing.