1981 02 10.77 -99.99 -99.99 
1981 03  2.35 -99.99 -99.99 
1981 04 16.64 -99.99 -99.99 
1981 07 99.99  14.00 -99.99 
1981 09 20.27 -99.99 -99.99 
1981 11 -1.76 -99.99 -99.99 
1988 04 12.81 -99.99 -99.99 
1988 06 26.07 -99.99 -99.99 
1988 07 26.68 -99.99 -99.99 
1988 08 26.43 -99.99 -99.99 
1988 09 23.26 -99.99 -99.99 
1988 10 11.59 -99.99 -99.99 
1988 11  3.94 -99.99 -99.99 
1989 01 -9.41 -99.99 -99.99 
1989 02 -9.50 -99.99 -99.99 
1989 03  1.84 -99.99 -99.99 
1989 08 28.48 -99.99 -99.99 
1990 04 15.01 -99.99 -99.99 
1990 06 28.69 -99.99 -99.99 
1990 07 27.71 -99.99 -99.99 
1990 10 13.54 -99.99 -99.99 
1990 11  2.45 -99.99 -99.99 
1990 12 -7.27 -99.99 -99.99 
1991 01 10.00 -99.99 -99.99 
1991 02 12.61 -99.99 -99.99 
1991 08 27.68 -99.99 -99.99 
1991 09 23.56 -99.99 -99.99 
1995 01 15.73 -99.99 -99.99 
1996 02 -8.93 -99.99 -99.99 
