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. 2020 Jul 31;125(5):e426–e428. doi: 10.1016/j.bja.2020.07.025

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© 2020 British Journal of Anaesthesia. Published by Elsevier Ltd. All rights reserved.

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Fig 1 — The mean of five measurements of particle concentrations (μg m⁻³) measured at 30 cm (red circle: mean [95% CI]) and 60 cm (blue solid square: mean [95% CI]) above the manikin's head for particulate matter diameter sizes: (a) PM₁: <1 μm, (b) PM_2.5: <2.5 μm, (c) PM₁₀: <10 μm, and (d) PM_covid: sum of particulate matter diameter sizes <1 μm (i.e. PM₁) and between 2.5 and 10 μm to simulate severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) aerosols. CI, confidence interval.