Year Month Day AO index 2001 AUG 1 1.301 2001 AUG 2 1.673 2001 AUG 3 1.661 2001 AUG 4 1.433 2001 AUG 5 1.020 2001 AUG 6 0.715 2001 AUG 7 0.593 2001 AUG 8 0.584 2001 AUG 9 0.699 2001 AUG 10 1.110 2001 AUG 11 1.668 2001 AUG 12 2.142 2001 AUG 13 2.016 2001 AUG 14 1.580 2001 AUG 15 1.315 2001 AUG 16 1.398 2001 AUG 17 1.545 2001 AUG 18 1.432 2001 AUG 19 0.827 2001 AUG 20 0.330 2001 AUG 21 -0.347 2001 AUG 22 -0.741 2001 AUG 23 -0.832 2001 AUG 24 -0.978 2001 AUG 25 -1.074 2001 AUG 26 -1.025 2001 AUG 27 -0.676 2001 AUG 28 -0.651 2001 AUG 29 -1.115 2001 AUG 30 -1.177 2001 AUG 31 -0.864 2001 SEP 1 -0.289 2001 SEP 2 -0.242 2001 SEP 3 -0.255 2001 SEP 4 0.281 2001 SEP 5 0.768 2001 SEP 6 0.838 2001 SEP 7 0.405 2001 SEP 8 0.043 2001 SEP 9 -0.196 2001 SEP 10 -0.116 2001 SEP 11 -0.344 2001 SEP 12 -0.682 2001 SEP 13 -0.101 2001 SEP 14 -0.164 2001 SEP 15 -0.829 2001 SEP 16 -1.111 2001 SEP 17 -1.557 2001 SEP 18 -1.963 2001 SEP 19 -1.910 2001 SEP 20 -1.569 2001 SEP 21 -1.315 2001 SEP 22 -1.494 2001 SEP 23 -1.932 2001 SEP 24 -1.989 2001 SEP 25 -1.376 2001 SEP 26 -1.182 2001 SEP 27 -1.177 2001 SEP 28 -1.135 2001 SEP 29 -0.521 2001 SEP 30 0.667 2001 OCT 1 1.740 2001 OCT 2 2.374 2001 OCT 3 1.981 2001 OCT 4 0.904 2001 OCT 5 0.120 2001 OCT 6 -0.268 2001 OCT 7 -0.303 2001 OCT 8 0.649 2001 OCT 9 2.388 2001 OCT 10 3.037 2001 OCT 11 2.394 2001 OCT 12 1.830 2001 OCT 13 1.473 2001 OCT 14 0.168 2001 OCT 15 -0.951 2001 OCT 16 -1.234 2001 OCT 17 -0.834 2001 OCT 18 -0.595 2001 OCT 19 -1.038 2001 OCT 20 -1.130 2001 OCT 21 -0.663 2001 OCT 22 0.097 2001 OCT 23 0.553 2001 OCT 24 0.657 2001 OCT 25 0.654 2001 OCT 26 0.613 2001 OCT 27 0.938 2001 OCT 28 1.432 2001 OCT 29 1.298 2001 OCT 30 1.157 2001 OCT 31 1.705 2001 NOV 1 2.434 2001 NOV 2 2.728 2001 NOV 3 2.665 2001 NOV 4 2.199 2001 NOV 5 1.903 2001 NOV 6 1.351 2001 NOV 7 0.928 2001 NOV 8 0.525 2001 NOV 9 1.735 2001 NOV 10 2.190 2001 NOV 11 1.215 2001 NOV 12 0.537 2001 NOV 13 0.575 2001 NOV 14 0.723 2001 NOV 15 0.901 2001 NOV 16 0.764 2001 NOV 17 0.242 2001 NOV 18 -0.185 2001 NOV 19 -0.052 2001 NOV 20 0.227 2001 NOV 21 0.068 2001 NOV 22 0.337 2001 NOV 23 0.270 2001 NOV 24 0.081 2001 NOV 25 0.549 2001 NOV 26 0.403 2001 NOV 27 -0.691 2001 NOV 28 -0.668 2001 NOV 29 -0.161 2001 NOV 30 -0.108