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                    Closing price on 8/14/2012
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                    | Open | 10.90 |  
                    | High | 11.40 |  
                    | Low | 10.90 |  
                    | Volume | 41,000 |  
                    | Split-adjusted Price | 7.16 |  
                
             | 
 |  POT Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 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 |   |  			
            | 8/6/2012 | +0.50 / +4.63% | 10.90 | 11.50 | 10.90 | 11.30 | 11.18 | 7.36 | 78,280 |   |  
            | 8/3/2012 | +0.10 / +0.93% | 10.50 | 10.80 | 10.50 | 10.80 | 10.73 | 7.03 | 30,054 |   |  			
            | 8/2/2012 | -0.10 / -0.93% | 10.90 | 10.90 | 10.70 | 10.70 | 10.80 | 6.97 | 60,200 |   |  
            | 8/1/2012 | 0.00 / 0.00% | 11.00 | 11.00 | 10.50 | 10.80 | 10.76 | 7.03 | 40,916 |   |  			
            | 7/31/2012 | +0.20 / +1.89% | 10.80 | 10.80 | 10.60 | 10.80 | 10.69 | 7.03 | 25,386 |   |  
            | 7/30/2012 | -0.60 / -5.36% | 10.90 | 11.00 | 10.50 | 10.60 | 10.72 | 6.90 | 56,400 |   |  			
            | 7/27/2012 | 0.00 / 0.00% | 11.20 | 11.80 | 11.00 | 11.20 | 11.41 | 7.29 | 101,408 |   |  
            | 7/26/2012 | 0.00 / 0.00% | 11.20 | 11.40 | 10.90 | 11.20 | 11.13 | 7.29 | 39,900 |   |  			
            | 7/25/2012 | 0.00 / 0.00% | 11.00 | 11.30 | 10.90 | 11.20 | 11.17 | 7.29 | 38,100 |   |  
            | 7/24/2012 | -1.00 / -8.20% | 11.80 | 11.80 | 11.20 | 11.20 | 11.28 | 7.29 | 113,500 |   |  			
            | 7/23/2012 | +0.40 / +3.39% | 12.60 | 12.60 | 11.80 | 12.20 | 12.30 | 7.94 | 125,208 |   |  
            | 7/20/2012 | +0.70 / +6.31% | 11.50 | 11.80 | 11.50 | 11.80 | 11.78 | 7.68 | 317,600 |   |  			
            | 7/19/2012 | +0.70 / +6.73% | 10.60 | 11.10 | 10.30 | 11.10 | 10.85 | 7.23 | 69,200 |   |  
            | 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 |   |  |