Research Article
Main Factors Influencing Winter Visibility at the Xinjin Flight College of the Civil Aviation Flight University of China
Table 1
Visibility, relative humidity, and PM2.5 concentration under different levels of haze days in Xinjin Airport in winter from 2013 to 2017.
| | Pollution level | Number of days (d) | Frequency (%) | Average visibility (m) | Average humidity (%) | Average PM2.5 (μg/m3) |
| | Severe | 26 | 7.7 | 1588.8 | 82.1 | 208.0 | | Moderate | 48 | 14.2 | 2566.7 | 78.5 | 155.6 | | Mild | 79 | 23.4 | 3963.1 | 75.2 | 126.6 | | Slight | 150 | 44.4 | 7649.7 | 64.9 | 83.1 | | Nonhaze | 33 | 9.8 | 10000.0 | 60.0 | 50.0 |
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