Table 5. Indoor environmental quality in 21 office units.
| Environmental indexes | Mean ±S.D. | Median | Range |
| Illumination (Lux)* | 495.2±392.0 | 384.5 | 57.6–1485.0 |
| CO (ppm)† | 0.73±0.10 | 0.74 | 0.54–0.90 |
| CO2 (ppm)† | 742.0±212.3 | 664.2 | 464.0–1193.6 |
| TVOC (ppb)† | 539.1±348.8 | 380.6 | 1.4–1330.0 |
| PM2.5 (µg/m3) | 37.9±31.3 | 27.3 | 6.1–126.5 |
| Total fungi (CFU/m3) | 507.2±751.5 | 254.4 | 115.0–3180.2 |
| Total bacterial (CFU/m3) | 385.2±222.4 | 333.3 | 123.7–927.3 |
| dCO2 (ppm) | 285.5±190.3 | 264.2 | 31.2–701.9 |
| CO2 I/O | 1.62±0.38 | 1.65 | 1.07–2.43 |
S.D. Standard deviation.
*Illumination was measured from each subject's desk.
†
CO, CO2 and TVOC missing 2, 2 and 1 samples, respectively.