1976 09 20.04 -99.99 -99.99 
1981 09 21.08 -99.99 -99.99 
2000 03  7.32   -.82   3.25 
2000 04 19.43   7.23  13.33 
2000 05 22.67   7.73  15.20 
2000 06 24.34  11.44  17.89 
2000 07 99.99  14.36 -99.99 
2000 08 27.38  14.58  20.98 
2000 09 18.42   8.68  13.55 
2000 10 15.73   3.59   9.66 
2000 11  9.16   5.27   7.21 
2001 01  2.53  -2.93   -.20 
2001 02  2.19  -4.02   -.91 
2001 03  9.87   -.47   4.69 
2001 04 17.79   4.14  10.96 
2001 05 19.98   8.53  14.25 
2001 06 22.50  12.08  17.29 
2001 07 29.93  17.75  23.84 
2001 08 28.02  14.16  21.09 
2001 09 20.16   9.72  14.94 
2001 10 15.81   4.39  10.10 
2001 11  5.87   -.28   2.79 
2001 12 -3.38 -10.27  -6.82 
2002 04 99.99   3.98 -99.99 
2003 01  -.71  -7.01  -3.86 
2003 03  3.83  -2.99    .41 
2003 04 13.68   2.40   8.04 
2003 05 27.53  12.14  19.83 
2003 06 25.17  12.02  18.59 
2003 07 26.35  15.44  20.89 
2003 08 27.58  13.89  20.73 
2003 09 20.99   8.45  14.71 
2003 10 12.49   3.43   7.96 
2003 11  7.75   2.52   5.13 
2003 12  3.05  -2.92    . 6 
2004 01 -1.14  -5.93  -3.53 
2004 02  2.02  -4.94  -1.46 
2004 03  9.18    .77   4.97 
2004 04 16.76   3.34  10.05 
2004 12 99.99  -1.96 -99.99 
2005 02 99.99  -6.77 -99.99 
2005 03 99.99  -3.83 -99.99 
2005 12 99.99  -1.63 -99.99 
2006 06 99.99  12.93 -99.99 
2007 02 99.99  -3.74 -99.99 
2008 07 28.08  15.43  21.75 
