Year Month Day AO index 2008 AUG 1 -1.428 2008 AUG 2 -1.031 2008 AUG 3 -0.736 2008 AUG 4 -0.914 2008 AUG 5 -1.149 2008 AUG 6 -1.074 2008 AUG 7 -0.796 2008 AUG 8 -0.538 2008 AUG 9 -0.058 2008 AUG 10 0.434 2008 AUG 11 0.293 2008 AUG 12 -0.114 2008 AUG 13 0.015 2008 AUG 14 0.671 2008 AUG 15 0.876 2008 AUG 16 0.356 2008 AUG 17 -0.366 2008 AUG 18 -0.463 2008 AUG 19 0.056 2008 AUG 20 0.136 2008 AUG 21 0.584 2008 AUG 22 1.311 2008 AUG 23 1.361 2008 AUG 24 0.885 2008 AUG 25 0.493 2008 AUG 26 0.364 2008 AUG 27 0.242 2008 AUG 28 -0.007 2008 AUG 29 -0.309 2008 AUG 30 -0.581 2008 AUG 31 -0.922 2008 SEP 1 -0.776 2008 SEP 2 -0.372 2008 SEP 3 0.154 2008 SEP 4 0.202 2008 SEP 5 0.200 2008 SEP 6 0.289 2008 SEP 7 0.085 2008 SEP 8 -0.180 2008 SEP 9 -0.578 2008 SEP 10 -0.742 2008 SEP 11 -0.663 2008 SEP 12 -0.515 2008 SEP 13 -0.854 2008 SEP 14 -1.093 2008 SEP 15 -0.950 2008 SEP 16 -0.447 2008 SEP 17 0.261 2008 SEP 18 0.542 2008 SEP 19 0.566 2008 SEP 20 0.437 2008 SEP 21 0.119 2008 SEP 22 -0.308 2008 SEP 23 -1.243 2008 SEP 24 -1.909 2008 SEP 25 -1.781 2008 SEP 26 -0.828 2008 SEP 27 0.132 2008 SEP 28 0.624 2008 SEP 29 0.573 2008 SEP 30 -0.398 2008 OCT 1 -1.571 2008 OCT 2 -1.856 2008 OCT 3 -0.964 2008 OCT 4 0.280 2008 OCT 5 0.754 2008 OCT 6 0.640 2008 OCT 7 0.641 2008 OCT 8 0.762 2008 OCT 9 1.305 2008 OCT 10 2.014 2008 OCT 11 2.508 2008 OCT 12 2.605 2008 OCT 13 2.509 2008 OCT 14 2.442 2008 OCT 15 2.379 2008 OCT 16 2.539 2008 OCT 17 2.180 2008 OCT 18 2.082 2008 OCT 19 2.398 2008 OCT 20 2.661 2008 OCT 21 2.566 2008 OCT 22 2.399 2008 OCT 23 3.505 2008 OCT 24 3.754 2008 OCT 25 3.452 2008 OCT 26 2.505 2008 OCT 27 1.499 2008 OCT 28 1.617 2008 OCT 29 1.222 2008 OCT 30 0.444 2008 OCT 31 0.828 2008 NOV 1 1.060 2008 NOV 2 1.274 2008 NOV 3 0.817 2008 NOV 4 -0.045 2008 NOV 5 -0.745 2008 NOV 6 -0.936 2008 NOV 7 -0.422 2008 NOV 8 0.078 2008 NOV 9 0.112 2008 NOV 10 -0.251 2008 NOV 11 0.097 2008 NOV 12 1.082 2008 NOV 13 1.419 2008 NOV 14 1.170 2008 NOV 15 1.239 2008 NOV 16 1.279 2008 NOV 17 1.749 2008 NOV 18 2.181 2008 NOV 19 1.618 2008 NOV 20 0.212 2008 NOV 21 -0.410 2008 NOV 22 -0.242 2008 NOV 23 -1.173 2008 NOV 24 -1.521 2008 NOV 25 -0.785 2008 NOV 26 -0.050 2008 NOV 27 -0.701 2008 NOV 28 -1.373 2008 NOV 29 -1.763 2008 NOV 30 -2.305