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                    Closing price on 9/18/2012
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        |           
                
                    | Open | 8.00 |  
                    | High | 8.30 |  
                    | Low | 7.80 |  
                    | Volume | 46,100 |  
                    | Split-adjusted Price | 5.08 |  
                
             | 
 |  POT Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 9/18/2012 | -0.20 / -2.50% | 8.00 | 8.30 | 7.80 | 7.80 | 7.81 | 5.08 | 46,100 |   |  
            | 9/17/2012 | -0.30 / -3.61% | 8.10 | 8.10 | 8.00 | 8.00 | 8.05 | 5.21 | 3,000 |   |  			
            | 9/14/2012 | +0.10 / +1.22% | 8.50 | 8.50 | 8.30 | 8.30 | 8.44 | 5.40 | 8,800 |   |  
            | 9/13/2012 | +0.50 / +6.49% | 7.80 | 8.20 | 7.80 | 8.20 | 7.98 | 5.34 | 7,700 |   |  			
            | 9/12/2012 | -0.10 / -1.28% | 7.90 | 8.20 | 7.70 | 7.70 | 7.84 | 5.01 | 19,700 |   |  
            | 9/11/2012 | -0.20 / -2.50% | 7.90 | 7.90 | 7.60 | 7.80 | 7.75 | 5.08 | 19,900 |   |  			
            | 9/10/2012 | -0.50 / -5.88% | 8.60 | 8.60 | 8.00 | 8.00 | 8.05 | 5.21 | 36,400 |   |  
            | 9/7/2012 | +0.40 / +4.94% | 8.20 | 8.50 | 8.20 | 8.50 | 8.40 | 5.53 | 1,800 |   |  			
            | 9/6/2012 | -0.20 / -2.41% | 8.20 | 8.20 | 8.00 | 8.10 | 8.10 | 5.27 | 28,200 |   |  
            | 9/5/2012 | -0.40 / -4.60% | 8.40 | 8.50 | 8.30 | 8.30 | 8.33 | 5.40 | 26,580 |   |  			
            | 9/4/2012 | 0.00 / 0.00% | 8.80 | 8.90 | 8.70 | 8.70 | 8.79 | 5.66 | 31,697 |   |  
            | 8/31/2012 | -0.10 / -1.14% | 8.50 | 8.80 | 8.50 | 8.70 | 8.62 | 5.66 | 28,800 |   |  			
            | 8/30/2012 | +0.20 / +2.33% | 8.60 | 8.90 | 8.60 | 8.80 | 8.77 | 5.73 | 9,300 |   |  
            | 8/29/2012 | +0.50 / +6.17% | 8.40 | 8.60 | 8.10 | 8.60 | 8.49 | 5.60 | 32,700 |   |  			
            | 8/28/2012 | -0.20 / -2.41% | 8.50 | 8.50 | 7.80 | 8.10 | 8.07 | 5.27 | 38,700 |   |  
            | 8/27/2012 | -0.50 / -5.68% | 8.90 | 8.90 | 8.30 | 8.30 | 8.36 | 5.40 | 120,300 |   |  			
            | 8/24/2012 | -0.20 / -2.22% | 8.50 | 9.30 | 8.50 | 8.80 | 8.90 | 5.73 | 253,800 |   |  
            | 8/23/2012 | -0.60 / -6.25% | 9.50 | 9.50 | 9.00 | 9.00 | 9.02 | 5.86 | 68,100 |   |  			
            | 8/22/2012 | -0.70 / -6.80% | 9.60 | 10.30 | 9.60 | 9.60 | 9.76 | 6.25 | 207,200 |   |  
            | 8/21/2012 | -0.70 / -6.36% | 10.90 | 10.90 | 10.30 | 10.30 | 10.36 | 6.71 | 161,600 |   |  			
            | 8/20/2012 | 0.00 / 0.00% | 10.90 | 11.20 | 10.90 | 11.00 | 11.02 | 7.16 | 18,500 |   |  
            | 8/17/2012 | 0.00 / 0.00% | 10.90 | 11.00 | 10.80 | 11.00 | 10.92 | 7.16 | 24,400 |   |  			
            | 8/16/2012 | +0.10 / +0.92% | 11.00 | 11.00 | 11.00 | 11.00 | 11.00 | 7.16 | 24,000 |   |  
            | 8/15/2012 | -0.10 / -0.91% | 11.10 | 11.10 | 10.90 | 10.90 | 11.01 | 7.10 | 49,180 |   |  			
            | 8/14/2012 | +0.10 / +0.92% | 10.90 | 11.40 | 10.90 | 11.00 | 11.00 | 7.16 | 41,000 |   |  
            | 8/13/2012 | 0.00 / 0.00% | 11.00 | 11.00 | 10.70 | 10.90 | 10.93 | 7.10 | 45,300 |   |  			
            | 8/10/2012 | -0.40 / -3.54% | 10.90 | 11.30 | 10.80 | 10.90 | 10.89 | 7.10 | 47,159 |   |  
            | 8/9/2012 | 0.00 / 0.00% | 11.10 | 11.70 | 10.90 | 11.30 | 11.22 | 7.36 | 46,800 |   |  			
            | 8/8/2012 | +0.30 / +2.73% | 10.70 | 11.30 | 10.70 | 11.30 | 11.25 | 7.36 | 2,540 |   |  
            | 8/7/2012 | -0.30 / -2.65% | 11.10 | 11.10 | 10.80 | 11.00 | 11.06 | 7.16 | 23,300 |   |  |