1974 03 17.81  -2.79   7.51 
1974 04 22.74  -2.82   9.96 
1974 05 28.49   3.38  15.93 
1974 06 35.25   8.91  22.08 
1974 07 32.15  11.31  21.73 
1974 08 31.79   9.26  20.52 
1974 09 29.04   7.66  18.35 
1974 10 22.85   4.62  13.73 
1974 11 16.59  -3.48   6.55 
1974 12 10.33 -99.99 -99.99 
1975 01 12.49  -6.47   3.01 
1975 02 12.38  -5.28   3.55 
1975 03 14.38  -3.22   5.58 
1975 04 16.58  -3.79   6.39 
1975 05 24.73   1.39  13.06 
1975 06 30.69   5.28  17.98 
1975 07 32.34  12.87  22.60 
1975 08 33.66  10.86  22.26 
1975 09 29.62   7.79  18.70 
1975 10 24.43   1.00  12.71 
1975 11 18.53  -5.82   6.35 
1975 12 13.55  -5.72   3.91 
1976 01 14.16  -7.77   3.19 
1976 02 14.74  -4.16   5.29 
1976 03 15.95  -3.73   6.10 
1976 04 20.15  -2.84   8.65 
1976 05 26.37   4.98  15.67 
1976 06 31.69   4.67  18.18 
1976 07 32.12  12.31  22.21 
1976 08 31.85   9.79  20.82 
1976 09 27.44   7.35  17.39 
2008 06 33.04  10.61  21.82 
2008 07 32.83  15.45  24.14 
2008 08 32.03  15.32  23.67 
2008 09 29.77  11.37  20.57 
2008 11 18.20    .74   9.47 
2009 01 13.51  -2.38   5.56 
2009 02 14.11  -2.42   5.84 
2009 03 17.99  -1.10   8.44 
2009 05 28.96 -99.99 -99.99 
2009 06 28.94  18.31  23.62 
2009 07 35.24  22.87  29.05 
2009 08 34.09  18.20  26.15 
2010 06 32.11  10.73  21.42 
2010 07 32.99  16.67  24.83 
2010 08 32.02  15.37  23.69 
2010 09 31.34  11.37  21.35 
2010 10 22.78   6.62  14.70 
2011 02 11.01 -99.99 -99.99 
2011 03 17.58   -.70   8.43 
2012 05 27.05   6.52  16.78 
2012 06 33.40  11.78  22.59 
2012 07 32.07  16.75  24.41 
2012 08 32.71  16.29  24.50 
2012 09 29.39  12.80  21.09 
2012 10 24.75   5.76  15.25 
2012 11 19.41   1.71  10.56 
2012 12 11.06  -3.00   4.03 
2013 01 10.39  -4.91   2.74 
