1975 12 14.60   -.82   6.89 
1976 01 15.32  -1.71   6.80 
1976 02 16.86   2.61   9.73 
1979 04 22.89   6.64  14.76 
2011 01 12.10   3.16   7.63 
2011 02 15.82   2.48   9.14 
2011 03 18.39   6.14  12.26 
2011 04 23.02   7.29  15.15 
2011 05 25.93   9.08  17.50 
2011 06 32.16  14.87  23.51 
2011 07 37.41  18.31  27.86 
2011 08 37.64  18.76  28.20 
2011 09 35.59  17.52  26.55 
2011 10 26.92  11.28  19.10 
2011 11 17.54   4.66  11.10 
2011 12 15.47   -.95   7.26 
2012 01 17.43   1.66   9.54 
2012 02 16.84   3.63  10.23 
2012 03 19.54   4.81  12.17 
2012 04 23.50   8.45  15.97 
2012 05 31.26  11.36  21.31 
2012 06 34.66  14.58  24.62 
2012 07 37.98  18.25  28.11 
2012 09 36.24  17.14  26.69 
2012 10 27.31  11.03  19.17 
2012 11 20.37   6.48  13.42 
2012 12 14.09   4.41   9.25 
2013 01 14.45   1.23   7.84 
2013 02 16.67   2.56   9.61 
2013 03 23.00   7.33  15.16 
2013 04 27.28   8.89  18.09 
2013 05 30.72  12.88  21.80 
