Table 2 Descriptive statistics for lung function indicators, daily air pollution, and daily meteorological data.
From: Acute effects of ambient PM2.5 on lung function among schoolchildren
Variables | Mean | SD | Min | P25 | P50 | P75 | Max |
|---|---|---|---|---|---|---|---|
Lung function | |||||||
FVC, L | 2.65 | 1.26 | 0.57 | 1.72 | 2.26 | 3.36 | 7.48 |
FEV1, L | 2.46 | 1.26 | 0.27 | 1.55 | 2.04 | 3.17 | 7.17 |
PEF, L/s | 4.66 | 2.43 | 0.54 | 2.79 | 4.01 | 6.28 | 9.99 |
Air pollution data | |||||||
PM2.5, µg/m3 | 67.58 | 41.76 | 9.00 | 36.00 | 62.00 | 98.00 | 156.00 |
SO2, µg/m3 | 14.82 | 9.07 | 3.00 | 9.00 | 12.00 | 19.00 | 37.00 |
NO2, µg/m3 | 42.23 | 19.25 | 16.00 | 28.00 | 38.00 | 48.00 | 85.00 |
CO, mg/m3 | 0.95 | 0.27 | 0.60 | 0.70 | 0.99 | 1.00 | 1.43 |
O3_8h, µg/m3 | 80.01 | 57.74 | 4.00 | 50.00 | 63.00 | 103.00 | 215.00 |
Meteorological data | |||||||
Temperature, °C | 15.22 | 6.07 | 3.40 | 10.00 | 15.40 | 20.50 | 25.20 |
RH, % | 77.48 | 11.06 | 54.00 | 72.00 | 77.60 | 84.00 | 96.00 |
