24-hr Avg. PM2.5 of June, 2009 , Threshold = 15 ug m-3 (Exceedance = 35 ug m-3)
            
              
                | Accuracy (A) |  | 
              
                | Critical Success Index (CSI) |  | 
              
                | Probability of Detection (POD) |  | 
              
                | Bias (B) |  | 
              
                | False Alarm Ratio (FAR) |  | 
            
            note : zero value is due to too few observed or simulated concentration > 15 ug m-3