A batch record is not a temperature chart. It holds five things: the identity of the batch, the inputs that went into it, the process it passed through, every deviation from plan, and the decisions people took.
Each entry carries the same fields, and the last two are the ones farms skip. Stage. Measurement, with its point. Equipment state, meaning what the fan and dampers were doing. The deviation. The action. The reason for it. And the result, written later when you went back and looked. A record with actions but no results teaches nobody anything.