1974 11 -2.80 -13.60  -8.20 
1974 12 -8.70 -19.79 -14.25 
1975 01 99.99 -25.70 -99.99 
1975 02 99.99 -25.10 -99.99 
1975 03 -2.20 -16.29  -9.25 
1975 04 10.40  -6.30   2.04 
1975 05 15.70   1.80   8.75 
1975 06 20.20   6.20  13.20 
1975 07 23.80  10.10  16.95 
1975 08 18.90   6.70  12.79 
1975 09 19.40   1.20  10.30 
1975 10  6.60  -4.10   1.25 
1975 11 -9.20 -19.90 -14.54 
1975 12 99.99 -26.20 -99.99 
1976 01 14.40 -25.00 -19.70 
1976 02 12.10 -24.90 -18.50 
1976 03 -1.10 -16.10  -8.60 
1976 04 13.00  -3.70   4.65 
1976 05 17.79   2.50  10.14 
1976 07 21.10   8.39  14.75 
1976 08 19.70   8.80  14.25 
1976 09 19.50   3.40  11.45 
1976 10  7.10  -3.30   1.90 
1976 11  2.60  -9.30  -3.35 
1976 12 12.50 -21.80 -17.15 
1977 01 10.10 -19.50 -14.80 
1977 02  4.60 -10.70  -3.05 
1977 03   .80 -13.60  -6.40 
1977 04 13.10  -2.50   5.30 
1977 05 16.20   1.90   9.05 
