| 
                 
                    Closing price on 10/24/2012
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    40.20 | 
                 
                
                    | High | 
                    40.20 | 
                 
                
                    | Low | 
                    39.80 | 
                     
                
                    | Volume | 
                    53,520 | 
                                 
                
                    | Split-adjusted Price | 
                    16.57 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
GAS Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                10/24/2012
             | 
            
                -0.20 / -0.50%
             |             
            
                40.20
             |           
            
                40.20
             |               
            
                39.80
             |                           
            
                39.80
             | 
            
                39.91
             |                     
            
                16.57
             |                                 
            
                53,520
             |            
            
                 
             |                                       
         
    
        
            | 
                10/23/2012
             | 
            
                +0.60 / +1.52%
             |             
            
                39.80
             |           
            
                40.40
             |               
            
                39.50
             |                           
            
                40.00
             | 
            
                39.88
             |                     
            
                16.65
             |                                 
            
                172,530
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/22/2012
             | 
            
                -0.40 / -1.01%
             |             
            
                39.80
             |           
            
                39.80
             |               
            
                39.00
             |                           
            
                39.40
             | 
            
                39.26
             |                     
            
                16.40
             |                                 
            
                104,050
             |            
            
                 
             |                                       
         
    
        
            | 
                10/19/2012
             | 
            
                +0.90 / +2.31%
             |             
            
                39.20
             |           
            
                39.80
             |               
            
                38.70
             |                           
            
                39.80
             | 
            
                39.38
             |                     
            
                16.57
             |                                 
            
                271,750
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/18/2012
             | 
            
                0.00 / 0.00%
             |             
            
                39.30
             |           
            
                39.30
             |               
            
                38.90
             |                           
            
                38.90
             | 
            
                38.98
             |                     
            
                16.20
             |                                 
            
                60,080
             |            
            
                 
             |                                       
         
    
        
            | 
                10/17/2012
             | 
            
                -0.10 / -0.26%
             |             
            
                39.00
             |           
            
                39.40
             |               
            
                38.80
             |                           
            
                38.90
             | 
            
                38.95
             |                     
            
                16.20
             |                                 
            
                35,150
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/16/2012
             | 
            
                +0.30 / +0.78%
             |             
            
                38.90
             |           
            
                39.50
             |               
            
                38.80
             |                           
            
                39.00
             | 
            
                39.09
             |                     
            
                16.24
             |                                 
            
                134,690
             |            
            
                 
             |                                       
         
    
        
            | 
                10/15/2012
             | 
            
                -0.70 / -1.78%
             |             
            
                39.80
             |           
            
                39.80
             |               
            
                38.60
             |                           
            
                38.70
             | 
            
                38.87
             |                     
            
                16.11
             |                                 
            
                45,510
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/12/2012
             | 
            
                -0.30 / -0.76%
             |             
            
                39.80
             |           
            
                39.80
             |               
            
                39.40
             |                           
            
                39.40
             | 
            
                39.67
             |                     
            
                16.40
             |                                 
            
                79,120
             |            
            
                 
             |                                       
         
    
        
            | 
                10/11/2012
             | 
            
                0.00 / 0.00%
             |             
            
                39.70
             |           
            
                39.80
             |               
            
                39.50
             |                           
            
                39.70
             | 
            
                39.63
             |                     
            
                16.53
             |                                 
            
                110,180
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/10/2012
             | 
            
                0.00 / 0.00%
             |             
            
                39.20
             |           
            
                39.70
             |               
            
                39.20
             |                           
            
                39.70
             | 
            
                39.57
             |                     
            
                16.53
             |                                 
            
                33,740
             |            
            
                 
             |                                       
         
    
        
            | 
                10/9/2012
             | 
            
                0.00 / 0.00%
             |             
            
                39.90
             |           
            
                39.90
             |               
            
                38.80
             |                           
            
                39.70
             | 
            
                39.78
             |                     
            
                16.53
             |                                 
            
                574,310
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/8/2012
             | 
            
                +0.10 / +0.25%
             |             
            
                39.40
             |           
            
                40.10
             |               
            
                39.40
             |                           
            
                39.70
             | 
            
                39.89
             |                     
            
                16.53
             |                                 
            
                362,320
             |            
            
                 
             |                                       
         
    
        
            | 
                10/5/2012
             | 
            
                +0.80 / +2.06%
             |             
            
                38.80
             |           
            
                39.80
             |               
            
                38.80
             |                           
            
                39.60
             | 
            
                39.26
             |                     
            
                16.49
             |                                 
            
                217,330
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/4/2012
             | 
            
                +0.10 / +0.26%
             |             
            
                38.90
             |           
            
                38.90
             |               
            
                38.70
             |                           
            
                38.80
             | 
            
                38.76
             |                     
            
                16.16
             |                                 
            
                362,210
             |            
            
                 
             |                                       
         
    
        
            | 
                10/3/2012
             | 
            
                0.00 / 0.00%
             |             
            
                38.70
             |           
            
                39.00
             |               
            
                38.60
             |                           
            
                38.70
             | 
            
                38.75
             |                     
            
                16.11
             |                                 
            
                236,880
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/2/2012
             | 
            
                0.00 / 0.00%
             |             
            
                39.00
             |           
            
                39.00
             |               
            
                38.60
             |                           
            
                38.70
             | 
            
                38.71
             |                     
            
                16.11
             |                                 
            
                247,380
             |            
            
                 
             |                                       
         
    
        
            | 
                10/1/2012
             | 
            
                -1.40 / -3.49%
             |             
            
                40.00
             |           
            
                40.00
             |               
            
                38.60
             |                           
            
                38.70
             | 
            
                38.92
             |                     
            
                16.11
             |                                 
            
                129,660
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/28/2012
             | 
            
                +0.90 / +2.30%
             |             
            
                39.00
             |           
            
                40.20
             |               
            
                39.00
             |                           
            
                40.10
             | 
            
                39.66
             |                     
            
                16.70
             |                                 
            
                255,000
             |            
            
                 
             |                                       
         
    
        
            | 
                9/27/2012
             | 
            
                -0.80 / -2.00%
             |             
            
                39.80
             |           
            
                39.90
             |               
            
                39.20
             |                           
            
                39.20
             | 
            
                39.45
             |                     
            
                16.32
             |                                 
            
                170,210
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/26/2012
             | 
            
                +0.20 / +0.50%
             |             
            
                39.70
             |           
            
                40.40
             |               
            
                39.70
             |                           
            
                40.00
             | 
            
                39.94
             |                     
            
                16.65
             |                                 
            
                117,740
             |            
            
                 
             |                                       
         
    
        
            | 
                9/25/2012
             | 
            
                +1.00 / +2.58%
             |             
            
                39.20
             |           
            
                40.00
             |               
            
                39.20
             |                           
            
                39.80
             | 
            
                39.67
             |                     
            
                16.57
             |                                 
            
                303,570
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/24/2012
             | 
            
                -1.20 / -3.00%
             |             
            
                39.00
             |           
            
                40.00
             |               
            
                38.50
             |                           
            
                38.80
             | 
            
                38.89
             |                     
            
                16.16
             |                                 
            
                434,220
             |            
            
                 
             |                                       
         
    
        
            | 
                9/21/2012
             | 
            
                0.00 / 0.00%
             |             
            
                40.80
             |           
            
                40.80
             |               
            
                39.70
             |                           
            
                40.00
             | 
            
                39.95
             |                     
            
                16.65
             |                                 
            
                98,550
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/20/2012
             | 
            
                -0.70 / -1.72%
             |             
            
                40.70
             |           
            
                40.70
             |               
            
                39.60
             |                           
            
                40.00
             | 
            
                39.88
             |                     
            
                16.65
             |                                 
            
                46,540
             |            
            
                 
             |                                       
         
    
        
            | 
                9/19/2012
             | 
            
                +0.50 / +1.24%
             |             
            
                39.90
             |           
            
                41.00
             |               
            
                39.90
             |                           
            
                40.70
             | 
            
                40.47
             |                     
            
                16.95
             |                                 
            
                262,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/18/2012
             | 
            
                -1.10 / -2.66%
             |             
            
                41.40
             |           
            
                41.40
             |               
            
                39.50
             |                           
            
                40.20
             | 
            
                40.37
             |                     
            
                16.74
             |                                 
            
                143,650
             |            
            
                 
             |                                       
         
    
        
            | 
                9/17/2012
             | 
            
                -0.50 / -1.20%
             |             
            
                41.50
             |           
            
                42.00
             |               
            
                41.30
             |                           
            
                41.30
             | 
            
                41.63
             |                     
            
                17.20
             |                                 
            
                113,130
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/14/2012
             | 
            
                +0.50 / +1.21%
             |             
            
                42.40
             |           
            
                42.40
             |               
            
                41.50
             |                           
            
                41.80
             | 
            
                41.74
             |                     
            
                17.40
             |                                 
            
                824,280
             |            
            
                 
             |                                       
         
    
        
            | 
                9/13/2012
             | 
            
                +0.50 / +1.23%
             |             
            
                41.00
             |           
            
                41.40
             |               
            
                40.90
             |                           
            
                41.30
             | 
            
                41.09
             |                     
            
                17.20
             |                                 
            
                533,240
             |  
            
                 
             |                                                              
             
    
         
    
    
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