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                    Closing price on 7/6/2009
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                    | Open | 11.00 |  
                    | High | 11.60 |  
                    | Low | 11.00 |  
                    | Volume | 43,900 |  
                    | Split-adjusted Price | 6.43 |  
                
             | 
 |  POT Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 7/6/2009 | +0.60 / +5.45% | 11.00 | 11.60 | 11.00 | 11.60 | 11.49 | 6.43 | 43,900 |   |  
            | 7/3/2009 | 0.00 / 0.00% | 10.50 | 11.20 | 10.40 | 11.00 | 10.89 | 6.10 | 19,900 |   |  			
            | 7/2/2009 | +0.50 / +4.76% | 11.00 | 11.00 | 10.30 | 11.00 | 10.81 | 6.10 | 34,300 |   |  
            | 7/1/2009 | -0.20 / -1.87% | 10.40 | 10.50 | 10.20 | 10.50 | 10.34 | 5.82 | 47,400 |   |  			
            | 6/30/2009 | -0.30 / -2.73% | 11.10 | 11.20 | 10.60 | 10.70 | 10.93 | 5.93 | 62,000 |   |  
            | 6/29/2009 | +0.20 / +1.85% | 11.30 | 11.30 | 11.00 | 11.00 | 11.06 | 6.10 | 17,700 |   |  			
            | 6/26/2009 | -0.30 / -2.70% | 11.90 | 11.90 | 10.80 | 10.80 | 11.31 | 5.99 | 44,500 |   |  
            | 6/25/2009 | -0.90 / -7.50% | 12.50 | 12.50 | 11.10 | 11.10 | 11.61 | 6.15 | 30,900 |   |  			
            | 6/24/2009 | +0.70 / +6.19% | 10.70 | 12.00 | 10.60 | 12.00 | 11.90 | 6.65 | 42,800 |   |  
            | 6/23/2009 | -0.70 / -5.83% | 11.30 | 11.40 | 11.30 | 11.30 | 11.31 | 6.27 | 34,300 |   |  			
            | 6/22/2009 | -0.50 / -4.00% | 12.50 | 12.80 | 12.00 | 12.00 | 12.09 | 6.65 | 32,900 |   |  
            | 6/19/2009 | -0.10 / -0.79% | 13.40 | 13.40 | 12.50 | 12.50 | 12.89 | 6.93 | 47,900 |   |  			
            | 6/18/2009 | -0.20 / -1.56% | 12.60 | 12.60 | 12.60 | 12.60 | 12.60 | 6.99 | 27,100 |   |  
            | 6/17/2009 | +0.30 / +2.40% | 11.70 | 12.80 | 11.70 | 12.80 | 11.84 | 7.10 | 124,500 |   |  			
            | 6/16/2009 | -1.00 / -7.41% | 12.50 | 13.00 | 12.50 | 12.50 | 12.51 | 6.93 | 73,700 |   |  
            | 6/15/2009 | -0.30 / -2.17% | 14.20 | 14.40 | 13.30 | 13.50 | 13.40 | 7.49 | 107,100 |   |  			
            | 6/12/2009 | -0.60 / -4.17% | 14.00 | 14.70 | 13.70 | 13.80 | 14.18 | 7.65 | 154,100 |   |  
            | 6/11/2009 | +0.60 / +4.35% | 12.80 | 14.40 | 12.80 | 14.40 | 13.99 | 7.98 | 160,100 |   |  			
            | 6/10/2009 | -0.50 / -3.50% | 15.30 | 15.30 | 13.50 | 13.80 | 13.63 | 7.65 | 122,700 |   |  
            | 6/9/2009 | +0.20 / +1.42% | 15.00 | 15.00 | 14.00 | 14.30 | 14.53 | 7.93 | 279,900 |   |  			
            | 6/8/2009 | +0.80 / +6.02% | 14.10 | 14.10 | 14.10 | 14.10 | 14.10 | 7.82 | 80,600 |   |  
            | 6/5/2009 | +0.80 / +6.40% | 12.80 | 13.30 | 12.70 | 13.30 | 13.24 | 7.37 | 338,900 |   |  			
            | 6/4/2009 | +0.50 / +4.17% | 11.50 | 12.70 | 11.50 | 12.50 | 12.50 | 6.93 | 143,800 |   |  
            | 6/3/2009 | -0.20 / -1.64% | 12.20 | 12.20 | 11.80 | 12.00 | 11.90 | 6.65 | 156,700 |   |  			
            | 6/2/2009 | +0.20 / +1.67% | 12.80 | 12.80 | 12.00 | 12.20 | 12.56 | 6.76 | 166,500 |   |  
            | 6/1/2009 | +0.50 / +4.35% | 11.50 | 12.00 | 11.50 | 12.00 | 11.96 | 6.65 | 119,200 |   |  			
            | 5/29/2009 | -0.50 / -4.17% | 11.20 | 12.00 | 11.20 | 11.50 | 11.27 | 6.38 | 150,300 |   |  
            | 5/28/2009 | -0.40 / -3.23% | 12.00 | 12.00 | 12.00 | 12.00 | 12.00 | 6.65 | 33,100 |   |  			
            | 5/27/2009 | -0.30 / -2.36% | 13.00 | 13.40 | 12.30 | 12.40 | 12.79 | 6.88 | 107,000 |   |  
            | 5/26/2009 | +0.70 / +5.83% | 12.70 | 12.70 | 12.40 | 12.70 | 12.63 | 7.04 | 254,100 |   |  |