Year Month Day AO index 2007 MAY 1 -0.369 2007 MAY 2 -0.766 2007 MAY 3 -0.631 2007 MAY 4 -0.314 2007 MAY 5 0.322 2007 MAY 6 1.159 2007 MAY 7 1.855 2007 MAY 8 2.073 2007 MAY 9 1.883 2007 MAY 10 1.607 2007 MAY 11 1.356 2007 MAY 12 1.063 2007 MAY 13 0.917 2007 MAY 14 1.170 2007 MAY 15 1.584 2007 MAY 16 1.731 2007 MAY 17 1.989 2007 MAY 18 2.034 2007 MAY 19 1.994 2007 MAY 20 2.110 2007 MAY 21 1.481 2007 MAY 22 0.679 2007 MAY 23 0.580 2007 MAY 24 0.963 2007 MAY 25 1.122 2007 MAY 26 0.949 2007 MAY 27 0.538 2007 MAY 28 0.203 2007 MAY 29 -0.610 2007 MAY 30 -0.960 2007 MAY 31 -0.999 2007 JUN 1 -1.029 2007 JUN 2 -0.809 2007 JUN 3 -0.922 2007 JUN 4 -1.248 2007 JUN 5 -1.310 2007 JUN 6 -1.273 2007 JUN 7 -1.394 2007 JUN 8 -1.512 2007 JUN 9 -1.342 2007 JUN 10 -1.370 2007 JUN 11 -1.153 2007 JUN 12 -0.843 2007 JUN 13 -0.337 2007 JUN 14 0.364 2007 JUN 15 0.824 2007 JUN 16 0.905 2007 JUN 17 0.689 2007 JUN 18 0.352 2007 JUN 19 0.066 2007 JUN 20 0.172 2007 JUN 21 0.180 2007 JUN 22 0.001 2007 JUN 23 -0.553 2007 JUN 24 -1.192 2007 JUN 25 -1.207 2007 JUN 26 -0.871 2007 JUN 27 -0.384 2007 JUN 28 -0.041 2007 JUN 29 -0.207 2007 JUN 30 -0.616 2007 JUL 1 -0.871 2007 JUL 2 -0.947 2007 JUL 3 -0.788 2007 JUL 4 -0.737 2007 JUL 5 -0.777 2007 JUL 6 -0.689 2007 JUL 7 -0.709 2007 JUL 8 -0.645 2007 JUL 9 -0.378 2007 JUL 10 -0.138 2007 JUL 11 -0.170 2007 JUL 12 -0.380 2007 JUL 13 -0.790 2007 JUL 14 -0.938 2007 JUL 15 -0.962 2007 JUL 16 -1.055 2007 JUL 17 -0.769 2007 JUL 18 -0.081 2007 JUL 19 0.002 2007 JUL 20 -0.300 2007 JUL 21 -0.336 2007 JUL 22 -0.444 2007 JUL 23 -0.123 2007 JUL 24 0.130 2007 JUL 25 -0.024 2007 JUL 26 -0.040 2007 JUL 27 0.231 2007 JUL 28 0.526 2007 JUL 29 0.429 2007 JUL 30 0.067 2007 JUL 31 -0.152 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