Table 1.
Descriptive statistics of temperature, relative humidity, and UFP during the working hoursa, non-working hoursb, and the entire sampling day.
| Environments | Variables | Working hours |
Nonworking hours |
The entire sampling day |
|||
|---|---|---|---|---|---|---|---|
| Mean (SD) | Median (IQR) | Mean (SD) | Media (IQR) | Mean (SD) | Median (IQR) | ||
| Indoor | T, °C | 24.27 (1.18) | 24.15 (1.52) | 25.00 (1.00) | 25.22 (1.16) | 24.69 (1.11) | 24.80 (1.45) |
| RH, % | 56.99 (7.00) | 56.71 (8.93) | 59.70 (8.19) | 58.13 (14.47) | 57.4 (10.14) | 57.19 (13.04) | |
| UFP, counts/cm3 | 10,057 (5,725) | 9,196 (4,875) | 7,163 (2,972) | 6,602 (3,425) | 8,209 (4,407) | 7,444 (4,270) | |
| Outdoor | T, °C | 30.65 (4.15) | 30.76 (7.17) | 27.19 (2.76) | 27.68 (3.54) | 28.77 (3.84) | 28.67 (4.51) |
| RH, % | 49.01 (13.69) | 50.09 (21.79) | 60.60 (13.28) | 60.26 (19.15) | 57.24 (15.33) | 59.06 (23.06) | |
| UFP, counts/cm3 | 20,249 (9,116) | 18,717 (11,033) | 13,872 (6,366) | 12,130 (8,247) | 15,984 (7,977) | 14,236 (10,445) | |
a: The working hours were between 8:00 and 17:00; b: The non-working hours were between 17:00 and 8:00.
Definition of abbreviations: SD, standard deviation; IQR, interquartile range; T, temperature; RH, relative humidity; UFP, ultrafine particles.