site       lat       lon        
E5         20.6993   116.9024   
E4.5       20.6991   116.9051   
E4         20.699    116.9077   
E3.5       20.699    116.9109   
E3         20.6991   116.914    
E2.5       20.6992   116.9163   
E2         20.6993   116.9186   
E1_2-3_m   20.6999   116.92284  
E1_5-7_m   20.6999   116.92284