1981 07 28.73 -99.99 -99.99 
1984 07 99.99  15.42 -99.99 
1984 08 99.99  14.10 -99.99 
2000 03  5.18 -99.99 -99.99 
2000 04 19.02   7.56  13.29 
2000 05 19.98   8.92  14.45 
2000 06 24.22  13.62  18.92 
2000 07 99.99  17.44 -99.99 
2000 08 27.28  16.26  21.77 
2000 09 18.59   9.78  14.18 
2000 10 12.63   4.19   8.41 
2000 11  4.96   -.28   2.33 
2001 01  2.10  -3.10   -.49 
2001 02  -.28  -5.74  -3.01 
2001 03  7.75   -.40   3.67 
2001 04 14.99   6.65  10.82 
2001 05 19.44   9.03  14.23 
2001 06 22.84  12.92  17.88 
2001 07 32.05  19.52  25.78 
2001 08 28.62  16.74  22.68 
2001 09 21.09  11.66  16.37 
2001 10 12.70   4.40   8.55 
2001 11  6.33   -.21   3.06 
2001 12 -4.65 -10.02  -7.33 
2002 04 99.99   3.86 -99.99 
2002 09 99.99  12.68 -99.99 
2002 10 99.99   5.00 -99.99 
2003 01 -1.34  -6.11  -3.72 
2003 03  1.22  -4.80  -1.79 
2003 04 11.52   2.24   6.88 
2003 05 25.52  12.70  19.11 
2003 06 23.92  12.95  18.43 
2003 07 26.10  16.45  21.27 
2003 08 26.18  16.26  21.22 
2003 09 19.90   9.78  14.84 
2003 10 13.70   4.19   8.95 
2003 11  4.57    .84   2.70 
2003 12  1.04  -3.52  -1.23 
2004 01   .96  -2.29   -.66 
2004 02   .70  -5.13  -2.21 
2004 03  8.28    .69   4.48 
2004 04 14.83   4.13   9.47 
2005 02 99.99  -6.97 -99.99 
2005 03 99.99  -4.83 -99.99 
2005 11 99.99   1.13 -99.99 
2006 02 99.99  -9.96 -99.99 
2006 06 99.99  15.83 -99.99 
2007 02 99.99  -5.06 -99.99 
2008 07 99.99  16.98 -99.99 
