| 
                 
                    Closing price on 12/15/2011
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    7.60 | 
                 
                
                    | High | 
                    7.80 | 
                 
                
                    | Low | 
                    7.40 | 
                     
                
                    | Volume | 
                    2,810,400 | 
                                 
                
                    | Split-adjusted Price | 
                    7.60 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PVX Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                12/15/2011
             | 
            
                -0.30 / -3.80%
             |             
            
                7.60
             |           
            
                7.80
             |               
            
                7.40
             |                           
            
                7.60
             | 
            
                7.54
             |                     
            
                7.60
             |                                 
            
                2,810,400
             |            
            
                 
             |                                       
         
    
        
            | 
                12/14/2011
             | 
            
                -0.20 / -2.47%
             |             
            
                7.80
             |           
            
                8.10
             |               
            
                7.70
             |                           
            
                7.90
             | 
            
                7.86
             |                     
            
                7.90
             |                                 
            
                2,146,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/13/2011
             | 
            
                -0.10 / -1.22%
             |             
            
                8.30
             |           
            
                8.30
             |               
            
                8.00
             |                           
            
                8.10
             | 
            
                8.12
             |                     
            
                8.10
             |                                 
            
                1,619,500
             |            
            
                 
             |                                       
         
    
        
            | 
                12/12/2011
             | 
            
                -0.50 / -5.75%
             |             
            
                8.40
             |           
            
                8.50
             |               
            
                8.20
             |                           
            
                8.20
             | 
            
                8.32
             |                     
            
                8.20
             |                                 
            
                1,350,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/9/2011
             | 
            
                -0.20 / -2.25%
             |             
            
                8.90
             |           
            
                8.90
             |               
            
                8.50
             |                           
            
                8.70
             | 
            
                8.71
             |                     
            
                8.30
             |                                 
            
                2,002,900
             |            
            
                 
             |                                       
         
    
        
            | 
                12/8/2011
             | 
            
                -0.10 / -1.11%
             |             
            
                9.10
             |           
            
                9.20
             |               
            
                8.80
             |                           
            
                8.90
             | 
            
                9.02
             |                     
            
                8.49
             |                                 
            
                1,534,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/7/2011
             | 
            
                -0.20 / -2.17%
             |             
            
                9.20
             |           
            
                9.40
             |               
            
                9.00
             |                           
            
                9.00
             | 
            
                9.19
             |                     
            
                8.59
             |                                 
            
                1,820,600
             |            
            
                 
             |                                       
         
    
        
            | 
                12/6/2011
             | 
            
                0.00 / 0.00%
             |             
            
                9.30
             |           
            
                9.60
             |               
            
                9.20
             |                           
            
                9.20
             | 
            
                9.40
             |                     
            
                8.78
             |                                 
            
                3,797,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/5/2011
             | 
            
                +0.50 / +5.75%
             |             
            
                8.60
             |           
            
                9.20
             |               
            
                8.60
             |                           
            
                9.20
             | 
            
                9.09
             |                     
            
                8.78
             |                                 
            
                3,070,300
             |            
            
                 
             |                                       
         
    
        
            | 
                12/2/2011
             | 
            
                +0.20 / +2.35%
             |             
            
                8.00
             |           
            
                8.70
             |               
            
                8.00
             |                           
            
                8.70
             | 
            
                8.56
             |                     
            
                8.30
             |                                 
            
                1,504,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/1/2011
             | 
            
                +0.10 / +1.19%
             |             
            
                8.50
             |           
            
                8.80
             |               
            
                8.40
             |                           
            
                8.50
             | 
            
                8.55
             |                     
            
                8.11
             |                                 
            
                1,408,400
             |            
            
                 
             |                                       
         
    
        
            | 
                11/30/2011
             | 
            
                -0.20 / -2.33%
             |             
            
                8.70
             |           
            
                8.70
             |               
            
                8.40
             |                           
            
                8.40
             | 
            
                8.49
             |                     
            
                8.01
             |                                 
            
                1,403,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/29/2011
             | 
            
                -0.10 / -1.15%
             |             
            
                8.90
             |           
            
                8.90
             |               
            
                8.50
             |                           
            
                8.60
             | 
            
                8.67
             |                     
            
                8.20
             |                                 
            
                1,432,700
             |            
            
                 
             |                                       
         
    
        
            | 
                11/28/2011
             | 
            
                +0.20 / +2.35%
             |             
            
                8.30
             |           
            
                9.00
             |               
            
                8.10
             |                           
            
                8.70
             | 
            
                8.82
             |                     
            
                8.30
             |                                 
            
                1,970,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/25/2011
             | 
            
                -0.20 / -2.30%
             |             
            
                8.90
             |           
            
                8.90
             |               
            
                8.40
             |                           
            
                8.50
             | 
            
                8.49
             |                     
            
                8.11
             |                                 
            
                2,564,000
             |            
            
                 
             |                                       
         
    
        
            | 
                11/24/2011
             | 
            
                -0.40 / -4.40%
             |             
            
                9.20
             |           
            
                9.20
             |               
            
                8.70
             |                           
            
                8.70
             | 
            
                8.89
             |                     
            
                8.30
             |                                 
            
                1,212,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/23/2011
             | 
            
                +0.10 / +1.11%
             |             
            
                9.10
             |           
            
                9.40
             |               
            
                8.90
             |                           
            
                9.10
             | 
            
                9.07
             |                     
            
                8.68
             |                                 
            
                2,963,600
             |            
            
                 
             |                                       
         
    
        
            | 
                11/22/2011
             | 
            
                +0.10 / +1.12%
             |             
            
                8.90
             |           
            
                9.20
             |               
            
                8.40
             |                           
            
                9.00
             | 
            
                9.01
             |                     
            
                8.59
             |                                 
            
                1,257,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/21/2011
             | 
            
                -0.30 / -3.26%
             |             
            
                9.00
             |           
            
                9.20
             |               
            
                8.90
             |                           
            
                8.90
             | 
            
                9.01
             |                     
            
                8.49
             |                                 
            
                1,271,700
             |            
            
                 
             |                                       
         
    
        
            | 
                11/18/2011
             | 
            
                -0.20 / -2.13%
             |             
            
                9.30
             |           
            
                9.30
             |               
            
                9.00
             |                           
            
                9.20
             | 
            
                9.12
             |                     
            
                8.78
             |                                 
            
                1,903,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/17/2011
             | 
            
                -0.50 / -5.05%
             |             
            
                10.00
             |           
            
                10.00
             |               
            
                9.30
             |                           
            
                9.40
             | 
            
                9.54
             |                     
            
                8.97
             |                                 
            
                1,369,700
             |            
            
                 
             |                                       
         
    
        
            | 
                11/16/2011
             | 
            
                +0.50 / +5.32%
             |             
            
                9.50
             |           
            
                10.00
             |               
            
                9.40
             |                           
            
                9.90
             | 
            
                9.72
             |                     
            
                9.44
             |                                 
            
                2,603,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/15/2011
             | 
            
                +0.20 / +2.17%
             |             
            
                9.10
             |           
            
                9.70
             |               
            
                9.10
             |                           
            
                9.40
             | 
            
                9.39
             |                     
            
                8.97
             |                                 
            
                2,299,000
             |            
            
                 
             |                                       
         
    
        
            | 
                11/14/2011
             | 
            
                -0.60 / -6.12%
             |             
            
                9.90
             |           
            
                9.90
             |               
            
                9.20
             |                           
            
                9.20
             | 
            
                9.33
             |                     
            
                8.78
             |                                 
            
                3,458,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/11/2011
             | 
            
                -0.10 / -1.01%
             |             
            
                9.70
             |           
            
                10.10
             |               
            
                9.70
             |                           
            
                9.80
             | 
            
                9.83
             |                     
            
                9.35
             |                                 
            
                1,548,200
             |            
            
                 
             |                                       
         
    
        
            | 
                11/10/2011
             | 
            
                -0.30 / -2.94%
             |             
            
                10.10
             |           
            
                10.10
             |               
            
                9.80
             |                           
            
                9.90
             | 
            
                9.91
             |                     
            
                9.44
             |                                 
            
                2,103,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/9/2011
             | 
            
                -0.20 / -1.92%
             |             
            
                10.50
             |           
            
                10.50
             |               
            
                10.10
             |                           
            
                10.20
             | 
            
                10.21
             |                     
            
                9.73
             |                                 
            
                1,426,400
             |            
            
                 
             |                                       
         
    
        
            | 
                11/8/2011
             | 
            
                +0.10 / +0.97%
             |             
            
                10.40
             |           
            
                10.60
             |               
            
                10.20
             |                           
            
                10.40
             | 
            
                10.32
             |                     
            
                9.92
             |                                 
            
                1,604,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/7/2011
             | 
            
                -0.30 / -2.83%
             |             
            
                10.60
             |           
            
                10.60
             |               
            
                10.30
             |                           
            
                10.30
             | 
            
                10.37
             |                     
            
                9.83
             |                                 
            
                1,690,600
             |            
            
                 
             |                                       
         
    
        
            | 
                11/4/2011
             | 
            
                +0.20 / +1.92%
             |             
            
                10.60
             |           
            
                10.90
             |               
            
                10.40
             |                           
            
                10.60
             | 
            
                10.58
             |                     
            
                10.11
             |                                 
            
                1,572,600
             |  
            
                 
             |                                                              
             
    
         
    
    
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