Air-path numbers imply critical over-pressure — the two allocation bases were being shown side by side

Operator read intake 278 CFM against dump 7 + recirc 6 and concluded the environment must be at critical over-pressure. Diagnosed 2026-09-08: the four readings on the card are the allocated pair, and each is derived from the other. intake_allocated = Sigma-exhaust-capacity split by intake fan pct; exhaust_allocated = Sigma-intake-capacity split by exhaust fan pct. Printing both at once produces a diagram that cannot balance and cannot be read. Fixed the diagram side: pressure now comes off capacity vs capacity (new sensor.dsc_cfm_intake_capacity_total / _exhaust_capacity_total / dsc_flow_net_pressure_cfm) with an explicit positive/negative/balanced verdict on the card. STILL OPEN for the operator: whether the resulting real imbalance wants a fan-automation change on the live rig.