Start with air sample locations, vent fan hours and ward complaint cards. It is the source used to decide how to compare air measurements taken on different sides of a vent outlet; it is not the decision itself. The rule only works if the source describes conditions at the westward vent corridor.
Known: the current file counts 44 samples with a location and a fan setting attached, compared with 45 in the prior window. An inspector checks the recorded condition at the work site. The entries have dates and a named clerk.
Disputed: The operator relies on the upper monitor. Residents ask for a sample from the corridor where they work and sleep. One side emphasizes the posted total; the other points to one sample point sits below the fan outlet while the public board uses the upper reading.
Why it matters: the decision determines which residents can rely on the service and which staff must carry out the change. The file does not settle that by itself.
Next: The Year third, rain shift window 3 file remains open for its scheduled decision. The ward monitor will publish paired samples with fan hours on the same card.
