Fig. 2.
Reported exposure time of infectees to a COVID-19 carrier according to the volume of the space. The long and the medium dashed lines (red and blue color) are the 95% confidence and prediction intervals, respectively. The dotted line (green color) indicates the time spent for inhaling 1% of the air volume in a given space by a person with an assumed average breathing rate of 1 m3/h. This breathing rate is in the range of the sitting and the light exercise modes defined by the International Commission on Radiological Protection (ICRP, 1994) model [27]