1951 06 26.09 -99.99 -99.99 
1974 09 21.73 -99.99 -99.99 
1976 09 18.54 -99.99 -99.99 
1981 07 29.04 -99.99 -99.99 
1981 09 21.28 -99.99 -99.99 
1984 07 99.99  14.53 -99.99 
1986 03 99.99  -3.07 -99.99 
1991 03  4.07 -99.99 -99.99 
1991 05 18.10 -99.99 -99.99 
1991 06 26.56 -99.99 -99.99 
1991 08 25.76 -99.99 -99.99 
1991 09 21.23 -99.99 -99.99 
1992 03  7.96 -99.99 -99.99 
1992 04 12.98 -99.99 -99.99 
1992 08 29.41 -99.99 -99.99 
1992 09 18.70 -99.99 -99.99 
1993 03  6.32 -99.99 -99.99 
1993 08 25.69 -99.99 -99.99 
1993 09 18.57 -99.99 -99.99 
1993 11 -2.59 -99.99 -99.99 
2000 01 -3.18  -8.54  -5.86 
2000 03  4.21   -.98   1.61 
2000 04 20.24   8.54  14.39 
2000 05 21.19   8.59  14.89 
2000 06 23.33  13.45  18.39 
2000 07 99.99  16.90 -99.99 
2000 08 27.63  15.64  21.63 
2000 09 18.96   9.67  14.32 
2000 10 13.63   4.39   9.01 
2000 11  6.18    .93   3.55 
2001 01  2.84  -2.26    .28 
2001 02  -.15  -5.80  -2.97 
2001 04 15.95   7.29  11.62 
2001 05 19.62   9.08  14.35 
2001 06 23.11  13.13  18.12 
2001 07 32.80  18.69  25.74 
2001 08 28.84  15.60  22.22 
2001 09 21.70  11.54  16.62 
2001 10 13.75   4.71   9.22 
2001 11  5.93    .50   3.21 
2001 12 -4.57 -10.73  -7.64 
2002 04 99.99   3.74 -99.99 
2002 07 99.99  18.66 -99.99 
2002 09 99.99  12.73 -99.99 
2002 11 99.99   1.62 -99.99 
2003 01 -1.24 -99.99 -99.99 
2003 02 99.99 -12.32 -99.99 
2003 03  1.03  -4.71  -1.84 
2003 04 12.16   2.15   7.15 
2003 05 26.45  13.21  19.83 
2003 06 23.75  13.48  18.61 
2003 07 25.67  16.21  20.94 
2003 08 25.99  15.44  20.71 
2003 09 20.51   9.13  14.82 
2003 10 13.26   4.34   8.80 
2003 11  4.86   1.51   3.18 
2003 12  1.53  -2.78   -.62 
2004 01   .68  -2.92  -1.12 
2004 02   .91  -5.67  -2.38 
2004 03  8.43   1.05   4.74 
2004 04 15.47   3.87   9.67 
2005 02 99.99  -7.05 -99.99 
2005 03 99.99  -4.73 -99.99 
2006 06 99.99  15.06 -99.99 
2007 02 99.99  -5.11 -99.99 
2008 07 27.36  16.41  21.88 
2012 09 22.55 -99.99 -99.99 
2012 10 17.50 -99.99 -99.99 
2012 11  8.02 -99.99 -99.99 
