Year Month Day AAO index 2004 MAY 1 0.349 2004 MAY 2 1.179 2004 MAY 3 1.436 2004 MAY 4 1.404 2004 MAY 5 0.908 2004 MAY 6 0.616 2004 MAY 7 0.600 2004 MAY 8 0.730 2004 MAY 9 0.718 2004 MAY 10 0.737 2004 MAY 11 0.215 2004 MAY 12 0.082 2004 MAY 13 -0.420 2004 MAY 14 -0.913 2004 MAY 15 -1.502 2004 MAY 16 -1.544 2004 MAY 17 -0.995 2004 MAY 18 -0.643 2004 MAY 19 0.251 2004 MAY 20 0.239 2004 MAY 21 0.324 2004 MAY 22 1.104 2004 MAY 23 1.262 2004 MAY 24 1.070 2004 MAY 25 0.873 2004 MAY 26 0.503 2004 MAY 27 0.130 2004 MAY 28 0.455 2004 MAY 29 1.255 2004 MAY 30 1.651 2004 MAY 31 1.586 2004 JUN 1 1.859 2004 JUN 2 2.268 2004 JUN 3 2.177 2004 JUN 4 1.615 2004 JUN 5 1.337 2004 JUN 6 1.496 2004 JUN 7 1.550 2004 JUN 8 1.243 2004 JUN 9 1.320 2004 JUN 10 2.043 2004 JUN 11 1.906 2004 JUN 12 0.920 2004 JUN 13 0.003 2004 JUN 14 -0.376 2004 JUN 15 0.118 2004 JUN 16 0.522 2004 JUN 17 0.490 2004 JUN 18 0.626 2004 JUN 19 0.635 2004 JUN 20 0.322 2004 JUN 21 -0.090 2004 JUN 22 0.103 2004 JUN 23 0.426 2004 JUN 24 1.287 2004 JUN 25 2.303 2004 JUN 26 2.472 2004 JUN 27 2.276 2004 JUN 28 1.871 2004 JUN 29 1.163 2004 JUN 30 0.619 2004 JUL 1 0.278 2004 JUL 2 -0.726 2004 JUL 3 -1.130 2004 JUL 4 -0.361 2004 JUL 5 0.868 2004 JUL 6 0.917 2004 JUL 7 0.548 2004 JUL 8 0.496 2004 JUL 9 0.007 2004 JUL 10 -0.407 2004 JUL 11 -0.270 2004 JUL 12 -0.212 2004 JUL 13 0.487 2004 JUL 14 0.969 2004 JUL 15 1.109 2004 JUL 16 2.082 2004 JUL 17 3.118 2004 JUL 18 3.410 2004 JUL 19 3.532 2004 JUL 20 3.454 2004 JUL 21 3.044 2004 JUL 22 2.572 2004 JUL 23 2.423 2004 JUL 24 2.225 2004 JUL 25 2.894 2004 JUL 26 3.377 2004 JUL 27 2.737 2004 JUL 28 1.928 2004 JUL 29 1.632 2004 JUL 30 1.538 2004 JUL 31 1.450 2004 AUG 1 1.247 2004 AUG 2 1.228 2004 AUG 3 1.161 2004 AUG 4 0.903 2004 AUG 5 0.396 2004 AUG 6 0.139 2004 AUG 7 -0.018 2004 AUG 8 -0.354 2004 AUG 9 -0.260 2004 AUG 10 -0.362 2004 AUG 11 -0.702 2004 AUG 12 -1.054 2004 AUG 13 -0.717 2004 AUG 14 -0.392 2004 AUG 15 0.013 2004 AUG 16 0.366 2004 AUG 17 0.362 2004 AUG 18 0.594 2004 AUG 19 0.510 2004 AUG 20 0.352 2004 AUG 21 -0.131 2004 AUG 22 -1.390 2004 AUG 23 -1.641 2004 AUG 24 -1.489 2004 AUG 25 -1.444 2004 AUG 26 -1.369 2004 AUG 27 -1.012 2004 AUG 28 -0.116 2004 AUG 29 0.984 2004 AUG 30 1.238 2004 AUG 31 0.752