2008 02  6.11 -99.99 -99.99 
2008 03 12.54    .74   6.64 
2008 04 18.95   6.41  12.68 
2008 05 21.94  11.01  16.47 
2008 06 28.34  18.07  23.20 
2008 07 28.55  18.69  23.62 
2008 08 28.41  17.35  22.88 
2008 09 27.85  15.94  21.89 
2008 10 19.83   7.01  13.42 
2008 11 12.22    .-1   6.10 
2008 12  7.08  -3.72   1.68 
2009 01  3.30  -6.29  -1.49 
2009 02  8.82  -2.42   3.19 
2009 03 14.49   1.82   8.15 
2009 04 19.68   6.91  13.29 
2009 05 23.33  13.13  18.23 
2009 06 28.28  18.19  23.23 
2009 07 25.95  17.49  21.72 
2009 08 27.61  18.01  22.81 
2009 09 24.83  15.93  20.38 
2009 10 16.45   6.49  11.47 
2009 11 15.87   3.65   9.76 
2009 12  5.66  -2.81   1.42 
2010 01  2.38  -7.02  -2.32 
2010 02  2.32  -6.84  -2.26 
2010 03 13.44    .97   7.20 
2010 04 23.15   7.85  15.50 
2010 05 24.06  14.45  19.25 
2010 06 29.70  20.01  24.85 
2010 07 30.99  20.29  25.64 
2010 08 32.33  19.45  25.89 
2010 09 29.05  13.65  21.34 
2010 10 22.88   6.32  14.60 
2010 11 14.89    .74   7.81 
2010 12  1.79  -6.56  -2.38 
2011 01  2.67  -6.39  -1.85 
2011 02  7.87  -2.90   2.48 
2011 03 14.57   3.11   8.84 
2011 04 20.78   8.43  14.61 
2011 05 22.69  12.87  17.78 
2011 06 28.35  18.19  23.27 
2011 07 30.92  21.11  26.01 
2011 08 29.55  17.96  23.75 
2011 09 23.69  13.86  18.77 
2011 10 19.61   5.75  12.68 
2011 12  9.45   -.65   4.40 
2013 01  8.39  -2.82   2.78 
2013 03  8.45  -1.75   3.35 
2013 04 18.89   5.57  12.23 
2013 05 23.37  12.60  17.98 
2013 06 26.80  17.18  21.99 
2013 07 26.93  18.10  22.51 
2013 08 27.44  17.95  22.69 
2013 09 25.78  14.72  20.25 
2013 10 18.74   8.45  13.59 
2014 04 21.05   7.45  14.25 
2014 05 24.25  12.96  18.60 
