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                    Closing price on 3/18/2013
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        |           
                
                    | Open | 8.00 |  
                    | High | 8.20 |  
                    | Low | 8.00 |  
                    | Volume | 1,700 |  
                    | Split-adjusted Price | 5.34 |  
                
             | 
 |  POT Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 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 |   |  			
            | 3/6/2013 | +0.60 / +8.11% | 7.50 | 8.00 | 7.50 | 8.00 | 7.80 | 5.21 | 8,100 |   |  
            | 3/5/2013 | -0.50 / -6.33% | 7.60 | 7.80 | 7.40 | 7.40 | 7.51 | 4.82 | 20,500 |   |  			
            | 3/4/2013 | -0.60 / -7.06% | 8.40 | 8.40 | 7.80 | 7.90 | 7.95 | 5.14 | 38,000 |   |  
            | 3/1/2013 | +0.20 / +2.41% | 8.30 | 8.50 | 8.10 | 8.50 | 8.23 | 5.53 | 17,000 |   |  			
            | 2/28/2013 | -0.20 / -2.35% | 8.80 | 8.80 | 8.30 | 8.30 | 8.38 | 5.40 | 3,400 |   |  
            | 2/27/2013 | +0.30 / +3.66% | 8.00 | 8.50 | 8.00 | 8.50 | 8.19 | 5.53 | 11,300 |   |  			
            | 2/26/2013 | -0.50 / -5.75% | 8.80 | 8.80 | 8.00 | 8.20 | 8.28 | 5.34 | 46,600 |   |  
            | 2/25/2013 | -0.10 / -1.14% | 8.60 | 8.80 | 8.60 | 8.70 | 8.78 | 5.66 | 16,200 |   |  			
            | 2/22/2013 | +0.30 / +3.53% | 8.80 | 9.00 | 8.50 | 8.80 | 8.75 | 5.73 | 58,500 |   |  
            | 2/21/2013 | -0.20 / -2.30% | 8.90 | 9.30 | 8.50 | 8.50 | 9.20 | 5.53 | 297,300 |   |  			
            | 2/20/2013 | +0.30 / +3.57% | 8.20 | 8.70 | 8.10 | 8.70 | 8.31 | 5.66 | 12,900 |   |  
            | 2/19/2013 | -0.10 / -1.18% | 8.50 | 8.50 | 8.30 | 8.40 | 8.42 | 5.47 | 2,600 |   |  			
            | 2/18/2013 | +0.30 / +3.66% | 8.50 | 8.70 | 8.30 | 8.50 | 8.41 | 5.53 | 15,800 |   |  
            | 2/8/2013 | +0.10 / +1.23% | 8.20 | 8.20 | 8.20 | 8.20 | 8.20 | 5.34 | 2,300 |   |  			
            | 2/7/2013 | -0.10 / -1.22% | 8.10 | 8.70 | 8.10 | 8.10 | 8.12 | 5.27 | 2,659 |   |  
            | 2/6/2013 | -0.20 / -2.38% | 8.20 | 8.30 | 8.10 | 8.20 | 8.18 | 5.34 | 15,700 |   |  			
            | 2/5/2013 | -0.20 / -2.33% | 7.90 | 8.40 | 7.90 | 8.40 | 8.15 | 5.47 | 200 |   |  
            | 2/4/2013 | +0.20 / +2.38% | 8.90 | 8.90 | 8.00 | 8.60 | 8.41 | 5.60 | 2,500 |   |  			
            | 2/1/2013 | +0.80 / +10.53% | 8.00 | 8.40 | 8.00 | 8.40 | 8.37 | 5.47 | 71,000 |   |  
            | 1/31/2013 | -0.20 / -2.56% | 7.80 | 7.80 | 7.50 | 7.60 | 7.58 | 4.95 | 40,600 |   |  			
            | 1/30/2013 | -0.20 / -2.50% | 7.80 | 8.20 | 7.80 | 7.80 | 7.90 | 5.08 | 14,900 |   |  
            | 1/29/2013 | +0.10 / +1.27% | 7.80 | 8.00 | 7.50 | 8.00 | 7.73 | 5.21 | 15,900 |   |  |