The solar wind excites the atoms on the ionosphere releasing diferent ligth colors depending on the emission spectrum.
| date | kp index | moon |
|---|---|---|
| Sep, 15 | Kp 4 | |
| Sep, 16 | Kp 5 | |
| Sep, 17 | Kp 5 | |
| Sep, 18 | Kp 3 | |
| Sep, 19 | Kp 2 | |
| Sep, 20 | Kp 2 | |
| Sep, 21 | Kp 2 | |
| Sep, 22 | Kp 2 | |
| Sep, 23 | Kp 2 | |
| Sep, 24 | Kp 5 | |
| Sep, 25 | Kp 5 | |
| Sep, 26 | Kp 5 | |
| Sep, 27 | Kp 4 | |
| Sep, 28 | Kp 2 | |
| Sep, 29 | Kp 2 |