As we expected, on March 25^th, statistics of PM2.5 in seven cities in Zhejiang -- Hangzhou, Ningbo, Wenzhou, Huzhou, Jiaxing, Shaoxing and Zhoushan was released by Provincial Environment Protection Office.

 As is requested, the monitoring statistic of every city should be chosen for one and be reported in the following day. According to the report released yesterday, the PM2.5 in the 5^th district of Chaohui in Hangzhou was 35 microgram per cubic meter, with a index of 50. And according to the "AQI Daily Report Technical Rule", the index from 0 to 50 means perfect, from 51 to 100 means good, from 101 to 150 means hypo-polluted, from 151-200 means medium polluted, from 201 to 300 means seriously polluted. And the PM index of Hangzhou on 24^th was 50, exactly in the scale of perfect.