【摘要】 在进行城市大气环境监测优化布点时,按网格实测法所优选出来的一组监测点,除了应满足总均值和各百分位数(第30,50,80,90百分位数)相对误差的要求外,还应有较好的组市线性正相关性,即相关系数r应大于检验表中相应的临界值(a=0.001或0.01,不低于0.05),回归直线截距a应尽可能接近于零,回归系数b应尽可能接近于1.更多还原

【Abstract】 When optimizing the siting of air quality monitoring points in a city, the optimized group of points from among all the network monitoring points not only should meet the relative error requirements of both the total averages and the percentiles (the 30th, 50th, 80th and 90th) between the group and the whole city, but also should have better positive linear correlation whose coefficient of correlation, r, should be more than the critical value in the correlation coefficient test table (the significance level a=0.001 or 0.01, at least not less than o.o5), the regression line intercept, a, should be as close to zero as possible and the regression coefficient, b, should be as close to unity as possible.更多还原