Year Month Day AO index 1999 NOV 1 2.049 1999 NOV 2 2.598 1999 NOV 3 2.408 1999 NOV 4 1.884 1999 NOV 5 1.182 1999 NOV 6 0.832 1999 NOV 7 -0.031 1999 NOV 8 -0.861 1999 NOV 9 -1.056 1999 NOV 10 -0.435 1999 NOV 11 0.131 1999 NOV 12 0.427 1999 NOV 13 1.041 1999 NOV 14 0.589 1999 NOV 15 -0.423 1999 NOV 16 -1.373 1999 NOV 17 -1.466 1999 NOV 18 -1.288 1999 NOV 19 -0.490 1999 NOV 20 0.915 1999 NOV 21 1.654 1999 NOV 22 1.465 1999 NOV 23 0.951 1999 NOV 24 0.551 1999 NOV 25 0.417 1999 NOV 26 0.876 1999 NOV 27 0.526 1999 NOV 28 0.284 1999 NOV 29 1.576 1999 NOV 30 2.739 1999 DEC 1 2.557 1999 DEC 2 1.685 1999 DEC 3 0.730 1999 DEC 4 0.369 1999 DEC 5 1.336 1999 DEC 6 2.538 1999 DEC 7 2.335 1999 DEC 8 1.130 1999 DEC 9 0.420 1999 DEC 10 0.747 1999 DEC 11 0.767 1999 DEC 12 -0.272 1999 DEC 13 -1.385 1999 DEC 14 -1.870 1999 DEC 15 -1.646 1999 DEC 16 -0.312 1999 DEC 17 0.419 1999 DEC 18 0.793 1999 DEC 19 0.881 1999 DEC 20 0.687 1999 DEC 21 0.728 1999 DEC 22 1.373 1999 DEC 23 2.664 1999 DEC 24 3.573 1999 DEC 25 3.555 1999 DEC 26 2.636 1999 DEC 27 1.189 1999 DEC 28 0.075 1999 DEC 29 0.302 1999 DEC 30 0.997 1999 DEC 31 2.178 2000 JAN 1 2.036 2000 JAN 2 1.532 2000 JAN 3 1.447 2000 JAN 4 1.191 2000 JAN 5 0.638 2000 JAN 6 1.420 2000 JAN 7 2.881 2000 JAN 8 3.154 2000 JAN 9 2.831 2000 JAN 10 2.378 2000 JAN 11 1.427 2000 JAN 12 0.709 2000 JAN 13 0.573 2000 JAN 14 1.028 2000 JAN 15 2.114 2000 JAN 16 1.608 2000 JAN 17 -0.037 2000 JAN 18 -1.091 2000 JAN 19 -1.008 2000 JAN 20 -0.817 2000 JAN 21 -0.949 2000 JAN 22 -0.698 2000 JAN 23 -0.148 2000 JAN 24 0.400 2000 JAN 25 0.382 2000 JAN 26 0.302 2000 JAN 27 1.497 2000 JAN 28 3.181 2000 JAN 29 3.886 2000 JAN 30 3.479 2000 JAN 31 2.626 2000 FEB 1 2.185 2000 FEB 2 2.512 2000 FEB 3 2.650 2000 FEB 4 2.884 2000 FEB 5 2.884 2000 FEB 6 2.738 2000 FEB 7 2.865 2000 FEB 8 3.131 2000 FEB 9 3.019 2000 FEB 10 2.519 2000 FEB 11 2.313 2000 FEB 12 1.736 2000 FEB 13 1.339 2000 FEB 14 1.410 2000 FEB 15 0.832 2000 FEB 16 -0.691 2000 FEB 17 -1.647 2000 FEB 18 -2.118 2000 FEB 19 -1.417 2000 FEB 20 -0.785 2000 FEB 21 -0.612 2000 FEB 22 -0.623 2000 FEB 23 -0.077 2000 FEB 24 0.119 2000 FEB 25 -0.059 2000 FEB 26 0.033 2000 FEB 27 0.814 2000 FEB 28 1.457 2000 FEB 29 0.678