Table 1.
Definitions of parameters.
Table 2.
Carbon dioxide (CO2) measurements taken immediately outside the room, from three CO2 meters at central locations within the room, and concurrent headcounts of room occupants.
Table 3.
Results of approach 1 (linear regression) and approach 2 (model fit) for estimating the absolute ventilation rate (Q) in the clinic waiting room.
Fig 1.
Number of individuals (A) and the difference in CO2 concentration (ppm) between the indoor and outdoor meters (B) over time.
Fig 2.
Difference between indoor and outdoor CO2 readings (ppm = parts per million) against the total CO2 generation rate at each time point (ls-1).
Line represents the best fit by linear regression with y-intercept constrained to be zero.
Fig 3.
Mean concentration of indoor CO2 (ppm = parts per million) vs time elapsed since start of data collection (s).
The line represents the fitted model from approach 2 and the black dots are the data points.
Table 4.
Carbon dioxide generation rate (ls-1) in each age group for each level of metabolic activity (MET [17]).