| 
    
        
            | 
                    Closing price on 6/11/2010
                 |  |  
    
        |           
                
                    | Open | 22.30 |  
                    | High | 23.40 |  
                    | Low | 22.30 |  
                    | Volume | 586,370 |  
                    | Split-adjusted Price | 23.40 |  
                
             | 
 |  PXT Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 6/11/2010 | +1.10 / +4.93% | 22.30 | 23.40 | 22.30 | 23.40 | 23.40 | 23.40 | 586,370 |   |  
            | 6/10/2010 | -0.10 / -0.45% | 22.40 | 22.40 | 21.70 | 22.30 | 22.30 | 22.30 | 275,430 |   |  			
            | 6/9/2010 | -1.10 / -4.68% | 23.30 | 23.40 | 22.40 | 22.40 | 22.40 | 22.40 | 738,730 |   |  
            | 6/8/2010 | -1.20 / -4.86% | 23.80 | 23.90 | 23.50 | 23.50 | 23.50 | 23.50 | 251,720 |   |  			
            | 6/7/2010 | -1.20 / -4.63% | 24.70 | 25.20 | 24.70 | 24.70 | 24.70 | 24.70 | 234,780 |   |  
            | 6/4/2010 | +0.30 / +1.17% | 26.80 | 26.80 | 25.60 | 25.90 | 25.90 | 25.90 | 505,250 |   |  			
            | 6/3/2010 | +1.20 / +4.92% | 23.20 | 25.60 | 23.20 | 25.60 | 25.60 | 25.60 | 2,824,790 |   |  
            | 6/2/2010 | -1.20 / -4.69% | 24.40 | 24.40 | 24.40 | 24.40 | 24.40 | 24.40 | 24,220 |   |  			
            | 6/1/2010 | +25.60 / +0.00% | 25.60 | 25.60 | 25.60 | 25.60 | 25.60 | 25.60 | 412,120 |   |  |