1970 11 -2.43 -12.05  -7.24 
1970 12 14.37 -24.23 -19.29 
1971 01 22.03 -33.87 -27.95 
1971 03 11.72 -30.44 -21.08 
1971 04   .69 -14.63  -6.97 
1971 05  8.47  -1.24   3.62 
1971 06 19.61   7.84  13.72 
1971 08 16.48   6.35  11.41 
1971 09 11.19    .95   6.07 
1971 10  1.07  -6.58  -2.75 
1971 11 -8.46 -18.06 -13.26 
1971 12 10.81 -20.49 -15.65 
1972 01 16.00 -25.43 -20.71 
1972 03 11.34 -28.55 -19.94 
1972 04 -1.94 -15.74  -8.84 
1972 05  9.46    . 2   4.74 
1972 06 16.90   3.83  10.36 
1972 08 18.83   6.26  12.54 
1972 10  3.75  -3.39    .17 
1972 11 -7.05 -13.97 -10.51 
1972 12 10.36 -18.37 -14.36 
1973 01 16.40 -32.15 -24.27 
1973 02 11.44 -20.91 -16.17 
1973 03 -7.64 -21.60 -14.62 
1973 04  3.26  -7.51  -2.12 
1973 05 12.63  -1.37   5.63 
1973 06 18.82   2.61  10.71 
1973 09 12.09   1.17   6.63 
1973 11 10.79 -21.08 -15.93 
1973 12 11.42 -22.19 -16.80 
1974 01 14.40 -23.93 -19.16 
1974 02 18.04 -32.20 -25.12 
1974 03 -5.27 -17.59 -11.43 
1974 04  5.11  -9.50  -2.19 
1975 05 11.48  -1.39   5.04 
1976 04  3.16 -15.23  -6.03 
1976 05 10.97  -2.31   4.33 
