October 30 days of air quality standards

March 20, 2017 | |Post a Comment

19, 2009, the Ministry of environmental protection issued in October the air quality of the city of 74. By the impact of the fall season, in October, the proportion of the number of days in 74 cities to reach the standard range of 3.2% – 100%, with an average of $52.2%. Xining city in October after only one day of air pollution, air quality is not standard, the rate of air quality reached 96.77%, with Shanghai, Nantong and other 13 city together to produce a report card for more than 80% of the number of days the proportion of standard.

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