Table 4.
Results of indoor RNA concentrations obtained through Monte Carlo simulations for breathing (scenario A) and speaking (scenario B). Data are expressed as median values and range of the corresponding expanded uncertainties (95.4% confidence interval). The sensitivity coefficients, the standard uncertainties (ui) and the contributions of the i-th parameter to the overall RNA concentration uncertainties are also reported.
| Ctheor (RNA copies m-3) |
Scenario A (breathing) |
Scenario B (speaking) |
||
|---|---|---|---|---|
| 3.2 (0.2–8.3) | 18.5 (4.5–43.0) | |||
| Parameter | Sensitivity coefficients (∂Ctheor/∂i) | Standard uncertainty(ui) | Uncertainty weight (%) | |
| CTM | Scenario A: 5.0 × 10-6 RNA copies m-3/(RNA copies mL-1) | 9.0 × 105 RNA copies mL-1 | 13.0% | 19.0% |
| Scenario B: 8.6 × 10-7 RNA copies m-3/(RNA copies mL-1) | ||||
| IR | Scenario A: 0.06 RNA copies m-3/(m3 h-1) | 0.03 m3 h-1 | < 0.1% | 1.0% |
| Scenario B: 36.67 RNA copies m-3/(m3 h-1) | ||||
| Vd-speaking | Scenario A: - | 0.0031 mL m-3 | – | 75.4% |
| Scenario B: 2888.1 RNA copies m-3/(mL m-3) | ||||
| Vd-breathing | Scenario A: 3373.6 RNA copies m-3/(mL m-3) | 0.0006 mL m-3 | 84.5% | 0.3% |
| Scenario B: 904.5 RNA copies m-3/(mL m-3) | ||||
| Vroom | Scenario A: − 0.048 RNA copies m-3/(m3) | 0.70 m3 | < 0.1% | < 0.1% |
| Scenario B: − 0.286 RNA copies m-3/(m3) | ||||
| AER | Scenario A: − 0.271 RNA copies m-3/(h-1) | 1.15 h-1 | 2.2% | 1.9% |
| Scenario B: − 1.235 RNA copies m-3/(h-1) | ||||
| log10k | Scenario A: − 0.305 RNA copies m-3/(h-1) | 0.30 h-1 | 0.2% | 0.2% |
| Scenario B: − 1.455 RNA copies m-3/(h-1) | ||||
| λ | Scenario A: − 0.305 RNA copies m-3/(h-1) | 0.18 h-1 | 0.1% | 0.1% |
| Scenario B: − 1.454 RNA copies m-3/(h-1) | ||||
| TFspeaking | Scenario A: - | 0.12 (-) | – | 2.1% |
| Scenario B: 13.146 RNA copies m-3/(-) | ||||