Year Month Day AO index 2009 NOV 1 1.896 2009 NOV 2 2.689 2009 NOV 3 1.330 2009 NOV 4 -0.690 2009 NOV 5 -0.844 2009 NOV 6 -0.187 2009 NOV 7 -0.479 2009 NOV 8 -0.332 2009 NOV 9 0.256 2009 NOV 10 0.177 2009 NOV 11 -0.158 2009 NOV 12 0.031 2009 NOV 13 -0.241 2009 NOV 14 -0.057 2009 NOV 15 0.630 2009 NOV 16 0.774 2009 NOV 17 1.110 2009 NOV 18 1.557 2009 NOV 19 1.118 2009 NOV 20 0.738 2009 NOV 21 0.562 2009 NOV 22 0.594 2009 NOV 23 0.615 2009 NOV 24 0.383 2009 NOV 25 0.654 2009 NOV 26 1.232 2009 NOV 27 1.075 2009 NOV 28 0.055 2009 NOV 29 -0.620 2009 NOV 30 -0.597 2009 DEC 1 -0.227 2009 DEC 2 -0.329 2009 DEC 3 -0.400 2009 DEC 4 -0.842 2009 DEC 5 -1.647 2009 DEC 6 -1.432 2009 DEC 7 -1.005 2009 DEC 8 -0.833 2009 DEC 9 -1.240 2009 DEC 10 -2.614 2009 DEC 11 -3.618 2009 DEC 12 -3.767 2009 DEC 13 -3.846 2009 DEC 14 -3.821 2009 DEC 15 -3.890 2009 DEC 16 -3.610 2009 DEC 17 -3.744 2009 DEC 18 -4.238 2009 DEC 19 -4.651 2009 DEC 20 -5.341 2009 DEC 21 -5.821 2009 DEC 22 -5.503 2009 DEC 23 -5.577 2009 DEC 24 -5.256 2009 DEC 25 -5.052 2009 DEC 26 -4.406 2009 DEC 27 -3.724 2009 DEC 28 -3.696 2009 DEC 29 -3.836 2009 DEC 30 -3.969 2009 DEC 31 -4.100 2010 JAN 1 -4.615 2010 JAN 2 -5.384 2010 JAN 3 -5.533 2010 JAN 4 -5.403 2010 JAN 5 -5.180 2010 JAN 6 -5.095 2010 JAN 7 -4.671 2010 JAN 8 -3.910 2010 JAN 9 -3.500 2010 JAN 10 -3.317 2010 JAN 11 -2.776 2010 JAN 12 -1.796 2010 JAN 13 -1.304 2010 JAN 14 -1.469 2010 JAN 15 -1.003 2010 JAN 16 0.163 2010 JAN 17 0.519 2010 JAN 18 -0.080 2010 JAN 19 -0.747 2010 JAN 20 -1.386 2010 JAN 21 -1.805 2010 JAN 22 -2.022 2010 JAN 23 -2.138 2010 JAN 24 -1.780 2010 JAN 25 -0.991 2010 JAN 26 -0.728 2010 JAN 27 -0.769 2010 JAN 28 -1.677 2010 JAN 29 -2.580 2010 JAN 30 -3.231 2010 JAN 31 -3.132 2010 FEB 1 -2.596 2010 FEB 2 -2.300 2010 FEB 3 -2.750 2010 FEB 4 -3.806 2010 FEB 5 -4.706 2010 FEB 6 -5.205 2010 FEB 7 -5.005 2010 FEB 8 -4.734 2010 FEB 9 -4.459 2010 FEB 10 -4.266 2010 FEB 11 -4.638 2010 FEB 12 -4.758 2010 FEB 13 -4.945 2010 FEB 14 -5.132 2010 FEB 15 -4.730 2010 FEB 16 -4.292 2010 FEB 17 -4.125 2010 FEB 18 -3.943 2010 FEB 19 -4.026 2010 FEB 20 -4.320 2010 FEB 21 -4.462 2010 FEB 22 -4.403 2010 FEB 23 -4.591 2010 FEB 24 -4.211 2010 FEB 25 -3.818 2010 FEB 26 -3.230 2010 FEB 27 -3.118 2010 FEB 28 -2.625