2004 05 10.74  -2.38   4.17 
2004 06 18.87   2.34  10.61 
2004 07 20.52   7.25  13.88 
2004 08 17.20   3.43  10.31 
2004 09 10.24    .47   5.35 
2005 05 15.14  -1.34   6.90 
2005 06 16.85   3.31  10.08 
2005 07 19.41   6.38  12.89 
2005 08 17.41   3.31  10.36 
2005 09 12.50    .15   6.32 
2006 05 15.09   1.26   8.17 
2006 06 19.70   7.55  13.62 
2006 07 22.07   7.91  14.99 
2006 08 20.16   3.85  12.00 
2006 09 99.99   2.73 -99.99 
2007 05 13.62   -.34   6.64 
2007 06 18.20   3.90  11.05 
2007 07 23.53   8.35  15.94 
2007 08 16.04   4.67  10.36 
2007 09 12.81    . 1   6.41 
2008 06 18.20   4.52  11.36 
2008 07 21.16   6.21  13.68 
2008 08 20.01   7.39  13.70 
2009 04  7.72  -6.39    .66 
2009 06 18.46   2.26  10.36 
2009 07 20.62   5.20  12.91 
2009 08 19.69   3.83  11.76 
2010 05 12.37  -1.29   5.54 
2010 06 19.54   3.44  11.49 
2010 08 17.87   6.63  12.25 
2010 09 12.45   1.46   6.95 
2011 04  7.95  -6.74    .60 
2011 05 16.85    .41   8.63 
2011 06 16.82   4.73  10.78 
2011 07 18.69   7.40  13.04 
