Year Month Day AO index 2007 AUG 1 -0.111 2007 AUG 2 0.039 2007 AUG 3 -0.058 2007 AUG 4 0.020 2007 AUG 5 0.161 2007 AUG 6 -0.006 2007 AUG 7 -0.203 2007 AUG 8 -0.665 2007 AUG 9 -1.063 2007 AUG 10 -1.181 2007 AUG 11 -0.865 2007 AUG 12 -0.470 2007 AUG 13 -0.196 2007 AUG 14 -0.236 2007 AUG 15 0.015 2007 AUG 16 0.217 2007 AUG 17 0.243 2007 AUG 18 0.199 2007 AUG 19 0.056 2007 AUG 20 -0.426 2007 AUG 21 -0.526 2007 AUG 22 0.059 2007 AUG 23 0.620 2007 AUG 24 1.051 2007 AUG 25 0.906 2007 AUG 26 0.276 2007 AUG 27 -0.041 2007 AUG 28 -0.131 2007 AUG 29 0.148 2007 AUG 30 0.476 2007 AUG 31 0.683 2007 SEP 1 0.694 2007 SEP 2 0.403 2007 SEP 3 0.385 2007 SEP 4 0.377 2007 SEP 5 0.198 2007 SEP 6 -0.141 2007 SEP 7 -0.530 2007 SEP 8 -0.411 2007 SEP 9 0.126 2007 SEP 10 0.404 2007 SEP 11 -0.239 2007 SEP 12 -0.464 2007 SEP 13 -0.257 2007 SEP 14 0.005 2007 SEP 15 0.107 2007 SEP 16 -0.062 2007 SEP 17 0.293 2007 SEP 18 0.665 2007 SEP 19 1.270 2007 SEP 20 1.795 2007 SEP 21 1.589 2007 SEP 22 0.833 2007 SEP 23 0.143 2007 SEP 24 -0.116 2007 SEP 25 0.120 2007 SEP 26 0.402 2007 SEP 27 0.151 2007 SEP 28 -0.616 2007 SEP 29 -1.226 2007 SEP 30 -0.724 2007 OCT 1 0.929 2007 OCT 2 2.027 2007 OCT 3 1.592 2007 OCT 4 0.233 2007 OCT 5 -0.073 2007 OCT 6 -0.167 2007 OCT 7 -1.014 2007 OCT 8 -1.631 2007 OCT 9 -1.925 2007 OCT 10 -1.449 2007 OCT 11 -0.626 2007 OCT 12 -0.401 2007 OCT 13 -0.260 2007 OCT 14 0.212 2007 OCT 15 0.586 2007 OCT 16 0.429 2007 OCT 17 0.060 2007 OCT 18 -0.105 2007 OCT 19 0.114 2007 OCT 20 0.033 2007 OCT 21 -0.210 2007 OCT 22 0.289 2007 OCT 23 0.473 2007 OCT 24 0.798 2007 OCT 25 1.605 2007 OCT 26 1.884 2007 OCT 27 2.200 2007 OCT 28 2.178 2007 OCT 29 1.579 2007 OCT 30 1.172 2007 OCT 31 0.930 2007 NOV 1 0.821 2007 NOV 2 1.219 2007 NOV 3 1.225 2007 NOV 4 -0.066 2007 NOV 5 -0.480 2007 NOV 6 -0.112 2007 NOV 7 -0.210 2007 NOV 8 -0.289 2007 NOV 9 -0.393 2007 NOV 10 -1.096 2007 NOV 11 -1.758 2007 NOV 12 -1.980 2007 NOV 13 -1.759 2007 NOV 14 -2.087 2007 NOV 15 -1.465 2007 NOV 16 -1.098 2007 NOV 17 -0.796 2007 NOV 18 -0.748 2007 NOV 19 -0.564 2007 NOV 20 -0.733 2007 NOV 21 -0.755 2007 NOV 22 0.098 2007 NOV 23 0.732 2007 NOV 24 0.161 2007 NOV 25 -0.646 2007 NOV 26 -0.395 2007 NOV 27 -0.215 2007 NOV 28 -0.170 2007 NOV 29 -0.406 2007 NOV 30 -1.043