[Retracted] Study on Transmission Channel and Pollution Sources Region of O₃ in Qingyuan City

Table 1

Correlation coefficients of ozone with average wind velocity and a number of days with level 1, level 2, level 3, or above.

Season	Average wind velocity	Number of days with wind level 1	Number of days with wind level 2	Number of days with wind level 3 or above
Spring	−0.02	−0.45	0.23	0.67
Summer	0.29	0.11	−0.40	0.41
Autumn	−0.02	−0.50	−0.06	0.19
Winter	−0.18	−0.02	0.26	−0.24