Year Month Day AO index 2007 FEB 1 -0.106 2007 FEB 2 -0.603 2007 FEB 3 -1.621 2007 FEB 4 -2.184 2007 FEB 5 -1.835 2007 FEB 6 -1.680 2007 FEB 7 -1.723 2007 FEB 8 -1.951 2007 FEB 9 -1.867 2007 FEB 10 -1.629 2007 FEB 11 -1.529 2007 FEB 12 -1.609 2007 FEB 13 -1.907 2007 FEB 14 -1.651 2007 FEB 15 -1.232 2007 FEB 16 -1.035 2007 FEB 17 -1.203 2007 FEB 18 -0.529 2007 FEB 19 -0.588 2007 FEB 20 -1.447 2007 FEB 21 -1.740 2007 FEB 22 -2.100 2007 FEB 23 -1.942 2007 FEB 24 -1.233 2007 FEB 25 -0.722 2007 FEB 26 -0.313 2007 FEB 27 0.298 2007 FEB 28 0.386 2007 MAR 1 0.110 2007 MAR 2 0.214 2007 MAR 3 0.597 2007 MAR 4 0.143 2007 MAR 5 0.009 2007 MAR 6 0.221 2007 MAR 7 0.131 2007 MAR 8 0.514 2007 MAR 9 0.949 2007 MAR 10 1.649 2007 MAR 11 2.336 2007 MAR 12 2.081 2007 MAR 13 1.992 2007 MAR 14 1.912 2007 MAR 15 1.661 2007 MAR 16 1.937 2007 MAR 17 2.353 2007 MAR 18 1.696 2007 MAR 19 0.640 2007 MAR 20 1.297 2007 MAR 21 1.722 2007 MAR 22 1.432 2007 MAR 23 0.812 2007 MAR 24 1.084 2007 MAR 25 1.702 2007 MAR 26 1.689 2007 MAR 27 1.322 2007 MAR 28 1.081 2007 MAR 29 0.849 2007 MAR 30 0.959 2007 MAR 31 0.578 2007 APR 1 -0.225 2007 APR 2 -0.638 2007 APR 3 -0.836 2007 APR 4 -1.230 2007 APR 5 -1.583 2007 APR 6 -1.846 2007 APR 7 -1.166 2007 APR 8 0.328 2007 APR 9 1.746 2007 APR 10 2.630 2007 APR 11 2.402 2007 APR 12 1.818 2007 APR 13 1.343 2007 APR 14 0.871 2007 APR 15 1.112 2007 APR 16 1.590 2007 APR 17 1.342 2007 APR 18 0.791 2007 APR 19 0.062 2007 APR 20 -0.277 2007 APR 21 -0.340 2007 APR 22 -0.026 2007 APR 23 0.719 2007 APR 24 1.246 2007 APR 25 1.428 2007 APR 26 1.703 2007 APR 27 1.319 2007 APR 28 0.780 2007 APR 29 0.472 2007 APR 30 0.206 2007 MAY 1 -0.369 2007 MAY 2 -0.766 2007 MAY 3 -0.631 2007 MAY 4 -0.314 2007 MAY 5 0.322 2007 MAY 6 1.159 2007 MAY 7 1.855 2007 MAY 8 2.073 2007 MAY 9 1.883 2007 MAY 10 1.607 2007 MAY 11 1.356 2007 MAY 12 1.063 2007 MAY 13 0.917 2007 MAY 14 1.170 2007 MAY 15 1.584 2007 MAY 16 1.731 2007 MAY 17 1.989 2007 MAY 18 2.034 2007 MAY 19 1.994 2007 MAY 20 2.110 2007 MAY 21 1.481 2007 MAY 22 0.679 2007 MAY 23 0.580 2007 MAY 24 0.963 2007 MAY 25 1.122 2007 MAY 26 0.949 2007 MAY 27 0.538 2007 MAY 28 0.203 2007 MAY 29 -0.610 2007 MAY 30 -0.960 2007 MAY 31 -0.999