Comparison of the Visibility Grading Forecast Method Based on Meteorological Factors and Environmental Factors

Table 2

Visibility grading forecast model.

Level	Visibility grading forecast model
1	Y = 16937.11 − 3.50972X1 + 25.05609X2 − 16.386X3 − 165.969X4 + 32.58018X5 + 95.8339X6
2	Y = 5183.243 − 20.0912X1 + 7.546235X2 + 13.8712X3 − 41.6568X4 + 33.85167X5 + 20.06746X6
3	Y = 3196.879 − 30.872X1 + 43.75235X2 − 5.32392X3 − 9.30138X4 + 4.731934X5 − 73.6623X6
4	Y = 12996.76 − 16.4763X1 − 3.28072X2 + 3.422158X3 − 87.6827X4 − 76.9059X5 − 64.8086X6
5	Y = 18171.71 − 189.568X1 + 94.9773X2 + 47.38879X3 − 71.2293X4 − 345.517X5 + 446.3217X6