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                    Closing price on 4/16/2013
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                    | Open | 4.40 |  
                    | High | 4.60 |  
                    | Low | 4.20 |  
                    | Volume | 2,950,600 |  
                    | Split-adjusted Price | 4.50 |  
                
             | 
 |  PVX Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 4/16/2013 | +0.10 / +2.27% | 4.40 | 4.60 | 4.20 | 4.50 | 4.39 | 4.50 | 2,950,600 |   |  
            | 4/15/2013 | -0.20 / -4.35% | 4.60 | 4.60 | 4.20 | 4.40 | 4.39 | 4.40 | 3,737,137 |   |  			
            | 4/12/2013 | -0.10 / -2.13% | 4.70 | 4.80 | 4.50 | 4.60 | 4.62 | 4.60 | 3,299,262 |   |  
            | 4/11/2013 | 0.00 / 0.00% | 4.70 | 4.90 | 4.60 | 4.70 | 4.72 | 4.70 | 2,621,905 |   |  			
            | 4/10/2013 | -0.30 / -6.00% | 5.00 | 5.10 | 4.50 | 4.70 | 4.83 | 4.70 | 4,377,075 |   |  
            | 4/9/2013 | 0.00 / 0.00% | 5.00 | 5.10 | 4.90 | 5.00 | 4.99 | 5.00 | 4,065,593 |   |  			
            | 4/8/2013 | 0.00 / 0.00% | 5.10 | 5.20 | 5.00 | 5.00 | 5.10 | 5.00 | 2,675,662 |   |  
            | 4/5/2013 | -0.10 / -1.96% | 4.80 | 5.10 | 4.60 | 5.00 | 4.96 | 5.00 | 3,788,045 |   |  			
            | 4/4/2013 | -0.50 / -8.93% | 5.40 | 5.60 | 5.10 | 5.10 | 5.14 | 5.10 | 15,884,598 |   |  
            | 4/3/2013 | 0.00 / 0.00% | 5.50 | 5.80 | 5.40 | 5.60 | 5.60 | 5.60 | 3,589,957 |   |  			
            | 4/2/2013 | -0.10 / -1.75% | 5.70 | 5.90 | 5.50 | 5.60 | 5.68 | 5.60 | 3,351,950 |   |  
            | 4/1/2013 | +0.40 / +7.55% | 4.80 | 5.80 | 4.80 | 5.70 | 5.47 | 5.70 | 4,244,269 |   |  			
            | 3/29/2013 | 0.00 / 0.00% | 5.20 | 5.40 | 5.00 | 5.30 | 5.19 | 5.30 | 4,276,125 |   |  
            | 3/28/2013 | -0.20 / -3.64% | 5.40 | 5.50 | 5.20 | 5.30 | 5.35 | 5.30 | 3,774,700 |   |  			
            | 3/27/2013 | -0.10 / -1.79% | 5.60 | 5.60 | 5.30 | 5.50 | 5.47 | 5.50 | 4,250,324 |   |  
            | 3/26/2013 | -0.10 / -1.75% | 5.70 | 5.80 | 5.50 | 5.60 | 5.65 | 5.60 | 3,175,138 |   |  			
            | 3/25/2013 | +0.10 / +1.79% | 5.60 | 5.70 | 5.50 | 5.70 | 5.64 | 5.70 | 2,928,835 |   |  
            | 3/22/2013 | -0.30 / -5.08% | 5.80 | 5.90 | 5.40 | 5.60 | 5.63 | 5.60 | 6,447,879 |   |  			
            | 3/21/2013 | +0.10 / +1.72% | 5.80 | 6.00 | 5.70 | 5.90 | 5.84 | 5.90 | 2,525,736 |   |  
            | 3/20/2013 | 0.00 / 0.00% | 5.80 | 6.00 | 5.70 | 5.80 | 5.90 | 5.80 | 3,651,237 |   |  			
            | 3/19/2013 | 0.00 / 0.00% | 5.90 | 5.90 | 5.60 | 5.80 | 5.76 | 5.80 | 3,259,850 |   |  
            | 3/18/2013 | -0.30 / -4.92% | 6.10 | 6.10 | 5.70 | 5.80 | 5.90 | 5.80 | 4,965,910 |   |  			
            | 3/15/2013 | +0.20 / +3.39% | 5.80 | 6.20 | 5.70 | 6.10 | 5.96 | 6.10 | 7,249,751 |   |  
            | 3/14/2013 | +0.20 / +3.51% | 5.80 | 5.90 | 5.60 | 5.90 | 5.79 | 5.90 | 6,340,574 |   |  			
            | 3/13/2013 | -0.50 / -8.06% | 6.30 | 6.30 | 5.70 | 5.70 | 5.94 | 5.70 | 7,590,195 |   |  
            | 3/12/2013 | -0.10 / -1.59% | 6.90 | 6.90 | 5.90 | 6.20 | 6.10 | 6.20 | 8,601,910 |   |  			
            | 3/11/2013 | +0.50 / +8.62% | 5.80 | 6.30 | 5.70 | 6.30 | 6.05 | 6.30 | 7,564,567 |   |  
            | 3/8/2013 | +0.30 / +5.45% | 5.30 | 5.80 | 5.30 | 5.80 | 5.69 | 5.80 | 4,615,800 |   |  			
            | 3/7/2013 | -0.10 / -1.79% | 5.10 | 5.80 | 5.10 | 5.50 | 5.57 | 5.50 | 6,522,001 |   |  
            | 3/6/2013 | +0.50 / +9.80% | 4.90 | 5.60 | 4.90 | 5.60 | 5.42 | 5.60 | 4,625,085 |   |  |  |