Table 1 Summary statistics of the HFMD counts, meteorological factors, and air pollution for 21 cities in Sichuan Province from 2015 to 2017
Variable | Min | P25 | P50 | P75 | Max | Mean ± SD |
|---|---|---|---|---|---|---|
Disease counts | ||||||
Daily number of HFMD cases | 0.0 | 2.0 | 4.0 | 9.0 | 267.0 | 9.3 ± 19.6 |
Meteorological indicators | ||||||
Mean temperature (°C) | -10.9 | 10.8 | 17.5 | 23.5 | 34.1 | 17.3 ± 7.6 |
Relative humidity (%) | 13.0 | 67.0 | 77.0 | 86.0 | 100.0 | 74.9 ± 14.5 |
Wind speed (m/s) | 0.0 | 1.0 | 1.4 | 1.8 | 6.6 | 1.5 ± 0.7 |
Sunshine duration (h) | 0.0 | 0.0 | 2.7 | 7.3 | 13.3 | 3.8 ± 4.0 |
Air pollution indicators | ||||||
SO2 (μg/m3) | 1.0 | 9.0 | 13.0 | 20.0 | 117.0 | 15.8 ± 10.2 |
NO2 (μg/m3) | 2.0 | 20.0 | 27.0 | 36.0 | 471.0 | 29.1 ± 14.0 |
PM10 (μg/m3) | 3.0 | 39.0 | 60.0 | 93.0 | 599.0 | 72.8 ± 47.5 |
CO (mg/m3) | 0.1 | 0.6 | 0.8 | 1.1 | 4.0 | 0.9 ± 0.4 |
O3 (μg/m3) | 2.0 | 38.0 | 57.0 | 80.0 | 243.0 | 62.3 ± 33.6 |