1991  9 12   0    2.6   11.7    3.2   19.1    0.8  -40.8  -59.5  -45.5  -61.2
1991  9 12   1   38.8   -1.0   23.1   21.8   12.4  -46.0  -36.2  -35.3  -62.7
1991  9 12   2   32.5   -0.2   25.7   16.1   23.0  -51.7  -28.3  -40.3  -50.5
1991  9 12   3   32.7    7.2   24.1   18.7   27.5  -46.9  -24.0  -40.1  -46.4
1991  9 12   4   16.4   31.5    6.4   25.1   25.1  -30.6  -31.9  -44.3  -43.1
1991  9 12   5    7.1   37.0    3.9   30.2   23.4  -23.9  -36.6  -41.6  -41.5
1991  9 12   6   -0.7   26.0    1.2   18.4   16.9  -37.2  -45.5  -50.3  -45.0
1991  9 12   7   -8.2   30.5  -10.4   12.9   10.4  -38.7  -54.1  -59.2  -48.5
1991  9 12   8   -3.9   27.0  -18.0    4.4    2.7  -45.9  -59.9  -68.0  -57.2
1991  9 12   9   -3.1   34.6  -23.2    8.2    0.8  -39.2  -61.4  -67.6  -59.3
1991  9 12  10   14.7   23.7  -10.9    6.8    7.1  -46.1  -49.4  -63.3  -59.4
1991  9 12  11   20.9   25.5   -2.5   12.8   16.2  -41.8  -38.7  -56.3  -53.0