【摘要】 以城市大气环境实测数据为背景，经过Ｂｏｘ－Ｃｏｘ变换，选取标准正态分布的代表点，得到大气环境质量分级标准值及对应概率。数据正规化后，从多种因素和总量统计进行大气环境质量综合比较分级，按综合分级值Ｍｉｊ从（０．０～１．０）均分原则，分为清洁级、尚清洁级、轻度污染级、中度污染级、重度污染级和极度污染级。更多还原

【Abstract】 Based on the data of urban air quality,the normal classified value and corresponding probabitity of air quality have been obtained by Box Cox transformation and choosing the representative points of the standard normal distribution.After nomalizing data,the comprehesive compartive classification of urban air quality can be carried it through diversified factors and general statistics.Acoording to the rule that the comprehensive classified value M ij can be divided equally from (0.0～1.0);the grades of clean,relatively clean,light pollution,middle pollution,high pollution and extreme pollution have been found.更多还原