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                    Closing price on 6/4/2009
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        |           
                
                    | Open | 20.50 |  
                    | High | 21.40 |  
                    | Low | 20.50 |  
                    | Volume | 3,910 |  
                    | Split-adjusted Price | 2.13 |  
                
             | 
 |  SDN Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 6/4/2009 | -0.80 / -3.72% | 20.50 | 21.40 | 20.50 | 20.70 | 20.70 | 2.13 | 3,910 |   |  
            | 6/3/2009 | +0.60 / +2.87% | 19.90 | 21.50 | 19.90 | 21.50 | 21.50 | 2.21 | 2,040 |   |  			
            | 6/2/2009 | +0.90 / +4.50% | 21.00 | 21.00 | 19.50 | 20.90 | 20.90 | 2.15 | 5,340 |   |  
            | 6/1/2009 | -1.00 / -4.76% | 20.90 | 20.90 | 20.00 | 20.00 | 20.00 | 2.06 | 1,620 |   |  			
            | 5/29/2009 | 0.00 / 0.00% | 21.00 | 21.00 | 21.00 | 21.00 | 21.00 | 2.16 | 80 |   |  
            | 5/28/2009 | -0.50 / -2.33% | 21.00 | 21.00 | 21.00 | 21.00 | 21.00 | 2.16 | 1,040 |   |  			
            | 5/27/2009 | +0.60 / +2.87% | 19.90 | 21.90 | 19.90 | 21.50 | 21.50 | 2.21 | 2,300 |   |  
            | 5/26/2009 | -0.10 / -0.48% | 21.00 | 21.00 | 20.90 | 20.90 | 20.90 | 2.15 | 2,920 |   |  			
            | 5/25/2009 | 0.00 / 0.00% | 20.90 | 21.00 | 20.90 | 21.00 | 21.00 | 2.16 | 660 |   |  
            | 5/22/2009 | +1.00 / +5.00% | 19.20 | 21.00 | 19.20 | 21.00 | 21.00 | 2.16 | 670 |   |  			
            | 5/21/2009 | 0.00 / 0.00% | 19.20 | 20.20 | 19.20 | 20.00 | 20.00 | 2.06 | 5,390 |   |  
            | 5/20/2009 | +0.60 / +3.09% | 20.00 | 20.00 | 20.00 | 20.00 | 20.00 | 2.06 | 500 |   |  			
            | 5/19/2009 | +0.60 / +3.19% | 19.00 | 19.50 | 19.00 | 19.40 | 19.40 | 2.00 | 830 |   |  
            | 5/18/2009 | -0.70 / -3.59% | 18.70 | 20.40 | 18.70 | 18.80 | 18.80 | 1.94 | 5,360 |   |  			
            | 5/15/2009 | +0.20 / +1.04% | 18.70 | 20.00 | 18.50 | 19.50 | 19.50 | 2.01 | 10,510 |   |  
            | 5/14/2009 | +0.40 / +2.12% | 19.10 | 19.80 | 19.10 | 19.30 | 19.30 | 1.99 | 120 |   |  			
            | 5/13/2009 | -0.10 / -0.53% | 18.10 | 18.90 | 18.10 | 18.90 | 18.90 | 1.95 | 6,030 |   |  
            | 5/12/2009 | -0.20 / -1.04% | 19.00 | 19.00 | 19.00 | 19.00 | 19.00 | 1.96 | 20 |   |  			
            | 5/11/2009 | +0.90 / +4.92% | 19.20 | 19.20 | 19.20 | 19.20 | 19.20 | 1.98 | 7,760 |   |  
            | 5/8/2009 | +0.90 / +5.17% | 17.40 | 19.00 | 17.40 | 18.30 | 18.30 | 1.88 | 700 |   |  			
            | 5/7/2009 | -1.10 / -5.95% | 19.40 | 19.40 | 17.40 | 17.40 | 17.40 | 1.79 | 3,240 |   |  
            | 5/6/2009 | +0.20 / +1.09% | 17.40 | 18.50 | 17.40 | 18.50 | 18.50 | 1.90 | 100 |   |  			
            | 5/5/2009 | +0.80 / +4.57% | 18.20 | 18.30 | 17.60 | 18.30 | 18.30 | 1.88 | 6,250 |   |  
            | 5/4/2009 | +0.80 / +4.79% | 16.70 | 17.50 | 16.70 | 17.50 | 17.50 | 1.80 | 7,410 |   |  			
            | 4/29/2009 | -0.80 / -4.57% | 16.70 | 16.70 | 16.70 | 16.70 | 16.70 | 1.72 | 580 |   |  
            | 4/28/2009 | +0.60 / +3.55% | 17.50 | 17.50 | 17.50 | 17.50 | 17.50 | 1.80 | 10 |   |  			
            | 4/27/2009 | +0.80 / +4.97% | 16.90 | 16.90 | 16.90 | 16.90 | 16.90 | 1.74 | 140 |   |  
            | 4/24/2009 | -0.80 / -4.73% | 16.10 | 16.10 | 16.10 | 16.10 | 16.10 | 1.66 | 1,170 |   |  			
            | 4/23/2009 | -0.80 / -4.52% | 16.90 | 17.70 | 16.90 | 16.90 | 16.90 | 1.74 | 870 |   |  
            | 4/22/2009 | +0.70 / +4.12% | 17.80 | 17.80 | 16.20 | 17.70 | 17.70 | 1.82 | 1,780 |   |  |