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                    Closing price on 4/17/2013
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                    | Open | 7.90 |  
                    | High | 8.10 |  
                    | Low | 7.80 |  
                    | Volume | 14,600 |  
                    | Split-adjusted Price | 5.55 |  
                
             | 
 |  POT Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 4/17/2013 | +0.20 / +2.53% | 7.90 | 8.10 | 7.80 | 8.10 | 7.90 | 5.55 | 14,600 |   |  
            | 4/16/2013 | +0.20 / +2.60% | 7.90 | 7.90 | 7.80 | 7.90 | 7.83 | 5.41 | 3,600 |   |  			
            | 4/15/2013 | -0.10 / -1.28% | 7.90 | 7.90 | 7.70 | 7.70 | 7.80 | 5.28 | 36,500 |   |  
            | 4/12/2013 | -0.10 / -1.27% | 7.80 | 7.80 | 7.80 | 7.80 | 7.80 | 5.35 | 3,024 |   |  			
            | 4/11/2013 | 0.00 / 0.00% | 8.00 | 8.00 | 7.90 | 7.90 | 7.91 | 5.41 | 5,200 |   |  
            | 4/10/2013 | -0.30 / -3.66% | 8.20 | 8.20 | 7.90 | 7.90 | 7.97 | 5.41 | 52,200 |   |  			
            | 4/9/2013 | +0.20 / +2.50% | 7.90 | 8.20 | 7.90 | 8.20 | 7.97 | 5.62 | 23,400 |   |  
            | 4/8/2013 | +0.10 / +1.27% | 7.80 | 8.10 | 7.80 | 8.00 | 7.99 | 5.48 | 25,400 |   |  			
            | 4/5/2013 | 0.00 / 0.00% | 8.00 | 8.20 | 7.80 | 7.90 | 7.95 | 5.41 | 14,800 |   |  
            | 4/4/2013 | -0.30 / -3.66% | 8.40 | 8.40 | 7.90 | 7.90 | 7.99 | 5.41 | 2,600 |   |  			
            | 4/3/2013 | -0.10 / -1.20% | 8.30 | 8.40 | 7.90 | 8.20 | 8.11 | 5.62 | 38,724 |   |  
            | 4/2/2013 | +0.40 / +5.06% | 8.00 | 8.60 | 8.00 | 8.30 | 8.42 | 5.69 | 94,600 |   |  			
            | 4/1/2013 | 0.00 / 0.00% | 7.90 | 7.90 | 7.90 | 7.90 | 7.90 | 5.41 | 6,600 |   |  
            | 3/29/2013 | 0.00 / 0.00% | 7.60 | 7.90 | 7.60 | 7.90 | 7.86 | 5.41 | 3,029 |   |  			
            | 3/28/2013 | 0.00 / 0.00% | 7.50 | 7.90 | 7.50 | 7.90 | 7.70 | 5.41 | 6,300 |   |  
            | 3/27/2013 | 0.00 / 0.00% | 7.90 | 8.00 | 7.90 | 7.90 | 7.90 | 5.41 | 63,100 |   |  			
            | 3/26/2013 | -0.10 / -1.25% | 7.60 | 8.00 | 7.50 | 7.90 | 7.61 | 5.41 | 17,600 |   |  
            | 3/25/2013 | 0.00 / 0.00% | 7.90 | 8.00 | 7.60 | 8.00 | 7.69 | 5.21 | 12,100 |   |  			
            | 3/22/2013 | -0.30 / -3.61% | 8.30 | 8.30 | 7.80 | 8.00 | 7.89 | 5.21 | 10,800 |   |  
            | 3/21/2013 | 0.00 / 0.00% | 8.40 | 8.50 | 7.80 | 8.30 | 7.91 | 5.40 | 9,700 |   |  			
            | 3/20/2013 | 0.00 / 0.00% | 8.30 | 8.30 | 8.30 | 8.30 | 8.30 | 5.40 | 500 |   |  
            | 3/19/2013 | +0.10 / +1.22% | 7.80 | 8.30 | 7.80 | 8.30 | 7.82 | 5.40 | 2,100 |   |  			
            | 3/18/2013 | +0.20 / +2.50% | 8.00 | 8.20 | 8.00 | 8.20 | 8.02 | 5.34 | 1,700 |   |  
            | 3/15/2013 | +0.10 / +1.27% | 7.90 | 8.00 | 7.90 | 8.00 | 7.95 | 5.21 | 5,500 |   |  			
            | 3/14/2013 | 0.00 / 0.00% | 8.00 | 8.00 | 7.90 | 7.90 | 7.94 | 5.14 | 13,200 |   |  
            | 3/13/2013 | -0.10 / -1.25% | 8.00 | 8.20 | 7.80 | 7.90 | 7.97 | 5.14 | 39,800 |   |  			
            | 3/12/2013 | -0.40 / -4.76% | 8.00 | 8.00 | 8.00 | 8.00 | 8.00 | 5.21 | 100 |   |  
            | 3/11/2013 | +0.10 / +1.20% | 8.00 | 8.40 | 8.00 | 8.40 | 8.04 | 5.47 | 8,000 |   |  			
            | 3/8/2013 | +0.60 / +7.79% | 7.80 | 8.30 | 7.80 | 8.30 | 7.89 | 5.40 | 1,100 |   |  
            | 3/7/2013 | -0.30 / -3.75% | 8.00 | 8.00 | 7.70 | 7.70 | 7.76 | 5.01 | 2,121 |   |  |