The forecasting object is everydays average of respirable suspended particulates(PM10), sulfur dioxide(SO2) and nitrogen dioxide(NO2).Forecasting effects were good after using five years.

• 预报对象为：可吸入颗粒物(PM10)、二氧化硫(SO2)、二氧化氮(NO2)日均值，经过近5年的使用，预报效果良好。