Who can tell us about the acid rain pollution situation in Suizhou, Hubei Province? Urgent help!

Seventeen cities in the province reported precipitation data. The pH value of urban precipitation ranged from 3.42 to 9.32. The lowest value occurred in Huangshi City (fourth quarter). Twelve cities experienced acid rain, accounting for 70% of the reported cities. %. The average pH of annual precipitation in each city ranges from 4.58 to 6.90. Among them, the average pH of Xianning, Yichang, Yidu, and Zhijiang is less than 5.6, and the other cities are all greater than 5.60. However, the average pH of Xiangfan, Jingzhou, and Enshi is all between 5.68 and 5.72, close to 5.60. .

Cities with an acid rain frequency greater than 20% include: Xianning 70%, Yidu 53.2%, Zhijiang 39.2%, Jingzhou 32.4%, Yichang 28.7%, and Enshi 21.4%. No acid rain occurred in the five cities of Xiaogan, Suizhou, Qianjiang, Tianmen and Chibi. Acid rain pollution is the most severe and widespread in the fourth quarter of the year, followed by the first quarter. Among the cities in the province's acid rain control zone, the average annual precipitation pH in Xianning, Yichang, Zhijiang and Yidu is less than 5.6. Compared with the previous year, more than half of the comparable cities had an increase in annual average precipitation pH and a decrease in acid rain frequency. Among them, the average precipitation pH in Enshi City increased by 1.28, and the acid rain rate decreased by 19.6%. Xianning and Zhijiang also experienced a decrease in acid rain. More than 20%.