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                    Closing price on 7/18/2012
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                    | Open | 10.70 |  
                    | High | 10.80 |  
                    | Low | 10.40 |  
                    | Volume | 28,400 |  
                    | Split-adjusted Price | 6.77 |  
                
             | 
 |  POT Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 7/18/2012 | -0.40 / -3.70% | 10.70 | 10.80 | 10.40 | 10.40 | 10.46 | 6.77 | 28,400 |   |  
            | 7/17/2012 | +0.40 / +3.85% | 10.50 | 11.00 | 10.50 | 10.80 | 10.68 | 7.03 | 20,100 |   |  			
            | 7/16/2012 | -0.50 / -4.59% | 10.90 | 10.90 | 10.40 | 10.40 | 10.54 | 6.77 | 33,800 |   |  
            | 7/13/2012 | +0.50 / +4.81% | 10.60 | 11.00 | 10.40 | 10.90 | 10.69 | 7.10 | 94,000 |   |  			
            | 7/12/2012 | +0.50 / +5.05% | 10.00 | 10.40 | 9.90 | 10.40 | 10.20 | 6.77 | 52,400 |   |  
            | 7/11/2012 | +0.10 / +1.02% | 10.00 | 10.00 | 9.80 | 9.90 | 9.93 | 6.45 | 35,800 |   |  			
            | 7/10/2012 | 0.00 / 0.00% | 9.90 | 10.00 | 9.60 | 9.80 | 9.87 | 6.38 | 9,361 |   |  
            | 7/9/2012 | -0.40 / -3.92% | 10.30 | 10.30 | 9.70 | 9.80 | 9.97 | 6.38 | 49,500 |   |  			
            | 7/6/2012 | -0.10 / -0.97% | 10.40 | 10.80 | 10.20 | 10.20 | 10.50 | 6.64 | 24,700 |   |  
            | 7/5/2012 | +0.20 / +1.98% | 10.10 | 10.60 | 10.00 | 10.30 | 10.20 | 6.71 | 69,300 |   |  			
            | 7/4/2012 | -0.30 / -2.88% | 10.40 | 10.40 | 10.00 | 10.10 | 10.19 | 6.58 | 43,500 |   |  
            | 7/3/2012 | -0.30 / -2.80% | 10.70 | 10.70 | 10.10 | 10.40 | 10.27 | 6.77 | 91,000 |   |  			
            | 7/2/2012 | -0.50 / -4.46% | 11.20 | 11.20 | 10.70 | 10.70 | 10.86 | 6.97 | 31,840 |   |  
            | 6/29/2012 | 0.00 / 0.00% | 11.00 | 11.30 | 10.90 | 11.20 | 10.99 | 7.29 | 35,200 |   |  			
            | 6/28/2012 | +0.50 / +4.67% | 10.70 | 11.20 | 10.70 | 11.20 | 10.82 | 7.29 | 52,500 |   |  
            | 6/27/2012 | -0.20 / -1.83% | 10.80 | 11.30 | 10.60 | 10.70 | 10.97 | 6.97 | 90,600 |   |  			
            | 6/26/2012 | -0.50 / -4.39% | 11.30 | 11.30 | 10.70 | 10.90 | 10.83 | 7.10 | 104,900 |   |  
            | 6/25/2012 | -0.80 / -6.56% | 12.00 | 12.00 | 11.40 | 11.40 | 11.53 | 7.42 | 127,500 |   |  			
            | 6/22/2012 | -0.10 / -0.81% | 12.10 | 12.40 | 12.10 | 12.20 | 12.27 | 7.94 | 36,700 |   |  
            | 6/21/2012 | +0.20 / +1.65% | 12.00 | 12.60 | 12.00 | 12.30 | 12.40 | 8.01 | 93,500 |   |  			
            | 6/20/2012 | -0.10 / -0.82% | 11.80 | 12.30 | 11.80 | 12.10 | 12.00 | 7.88 | 5,936 |   |  
            | 6/19/2012 | 0.00 / 0.00% | 12.00 | 12.40 | 12.00 | 12.20 | 12.17 | 7.94 | 64,708 |   |  			
            | 6/18/2012 | -0.30 / -2.40% | 12.50 | 12.90 | 12.10 | 12.20 | 12.39 | 7.94 | 76,100 |   |  
            | 6/15/2012 | +0.50 / +4.17% | 12.20 | 12.60 | 12.20 | 12.50 | 12.41 | 8.14 | 59,700 |   |  			
            | 6/14/2012 | -0.30 / -2.44% | 12.10 | 12.40 | 11.90 | 12.00 | 12.10 | 7.81 | 88,700 |   |  
            | 6/13/2012 | +0.30 / +2.50% | 12.00 | 12.70 | 11.90 | 12.30 | 12.17 | 8.01 | 44,500 |   |  			
            | 6/12/2012 | -0.80 / -6.25% | 12.60 | 12.70 | 11.90 | 12.00 | 12.26 | 7.81 | 96,700 |   |  
            | 6/11/2012 | +0.20 / +1.59% | 12.60 | 13.30 | 12.40 | 12.80 | 12.87 | 8.33 | 97,000 |   |  			
            | 6/8/2012 | +0.80 / +6.78% | 12.60 | 12.60 | 12.40 | 12.60 | 12.58 | 8.20 | 323,900 |   |  
            | 6/7/2012 | +0.80 / +7.27% | 11.50 | 11.80 | 11.50 | 11.80 | 11.76 | 7.68 | 75,500 |   |  |