From: PM2.5 in Beijing – temporal pattern and its association with influenza
Year | Measurements (days) | Range (lowest, highest) | Annual mean | Days1(%) | Days2(%) | Days3(%) |
---|---|---|---|---|---|---|
2008 | 212 | (5.8 235.38) | 84.74 (50.31) | 105 (49.53) | 174 (82.08) | 194 (91.51) |
2009 | 263 | (13.94, 482.25) | 104.65(70.41) | 165 (62.74) | 227 (86.31) | 239 (90.87) |
2010 | 320 | (9.0, 441.5) | 104.89 (76.38) | 186 (58.13) | 267 (83.44) | 286 (89.38) |
2011 | 333 | (10.38, 492.75) | 98.30 (79.65) | 170 (51.05) | 257 (77.18) | 279 (83.78) |
2012 | 329 | (2.92, 428.54) | 91.74 (68.85) | 169 (51.37) | 246 (74.77) | 278 (84.50) |
2013 | 289 | (10.5, 568.57) | 103.04 (83.77) | 149 (51.56) | 242 (83.74) | 262 (90.66) |