Fig 3.

Static pressure time series (blue markers), door opening events (red markers, gray line), trimmed mean time series (black line), and door opening event identification boundaries (green lines) for the outer pressure envelope during the negative-pressure demonstration. (A) IWH-MHH₁ (across fire doors) pressure time series. (B) IWH-MHH₂ (across anteroom) pressure time series. (C) ANT-MHH pressure time series. (D) ANT-STR1 pressure time series. (E) IWH-STR2 pressure time series. (F) ISR-IWH pressure time series. ANT, temporary anteroom; ISR, isolation room; IWH, isolation ward hallway; MHH, main hospital hallway; STR1, stairwell 1; STR2, stairwell 2. Note. Duplicate datasets are noted with subscripts 1, 2.