1997 07 27.74 -99.99 -99.99 
1997 08 24.76 -99.99 -99.99 
1997 09 21.84 -99.99 -99.99 
1997 10 15.98 -99.99 -99.99 
1997 11  7.04 -99.99 -99.99 
1997 12  3.92 -99.99 -99.99 
1998 01  3.39 -99.99 -99.99 
1998 02  5.90 -99.99 -99.99 
1998 03  7.45 -99.99 -99.99 
1998 04 15.60 -99.99 -99.99 
1998 05 23.27 -99.99 -99.99 
1998 06 25.56 -99.99 -99.99 
1998 07 27.38 -99.99 -99.99 
1998 08 28.14 -99.99 -99.99 
1998 09 25.15 -99.99 -99.99 
1998 10 16.79 -99.99 -99.99 
1998 11 10.28 -99.99 -99.99 
1998 12  5.51 -99.99 -99.99 
1999 01  -.45 -99.99 -99.99 
1999 02  4.66 -99.99 -99.99 
1999 03  7.16 -99.99 -99.99 
1999 04 15.29 -99.99 -99.99 
1999 05 22.38 -99.99 -99.99 
1999 06 26.95 -99.99 -99.99 
1999 07 28.67 -99.99 -99.99 
1999 08 25.15 -99.99 -99.99 
1999 09 23.81 -99.99 -99.99 
2000 04 11.45   1.09   6.27 
2000 05 20.29   8.67  14.48 
2000 06 23.86  13.98  18.92 
2000 07 24.12  13.01  18.56 
2000 08 24.03  14.18  19.10 
2000 09 19.94   8.93  14.44 
2000 10 16.11   4.57  10.34 
2000 11  6.94   -.39   3.27 
2000 12 -4.17 -13.46  -8.81 
2001 01 -1.00  -7.87  -4.43 
2001 02   .31  -7.95  -3.82 
2001 03  3.59  -4.71   -.56 
2001 04 14.70   2.36   8.53 
2001 05 20.45   9.50  14.98 
2001 06 24.12  14.00  19.06 
2001 07 27.15  15.02  21.08 
2001 08 27.25  15.15  21.20 
2001 09 19.86   9.93  14.90 
2001 10 14.65   5.29   9.96 
2001 11 11.52   2.92   7.22 
2001 12  3.97  -2.52    .72 
2002 01  1.73  -4.82  -1.54 
2002 02  2.54  -7.06  -2.26 
2002 03  3.53  -5.37   -.91 
2002 04 12.53   2.33   7.43 
2002 05 16.69   5.73  11.21 
2002 06 24.13  14.20  19.16 
2002 07 27.82  16.29  22.05 
2002 08 25.16  14.07  19.61 
2002 09 24.83  11.45  18.14 
2002 10 12.40   2.87   7.63 
2002 11  5.90  -1.81   2.04 
2002 12   .80  -6.03  -2.61 
2003 01 -4.17 -11.04  -7.60 
2003 02 -2.86 -12.35  -7.60 
2003 03  5.54  -6.95   -.70 
2003 04 10.90   -.93   4.98 
2003 05 17.03   6.60  11.81 
2003 06 22.86  11.61  17.23 
2003 07 25.49  14.78  20.13 
2003 08 25.88  14.65  20.26 
2003 09 21.96   9.03  15.49 
2003 10 14.32   3.85   9.08 
2003 11  7.91    .66   4.28 
2003 12  1.97  -4.96  -1.49 
