08 09 2017 15-minute Estimated Geomagnetic Activity Index UT:min Kp 00:00 9.00 00:15 9.00 00:30 9.00 00:45 9.00 01:00 9.00 01:15 9.00 01:30 9.00 01:45 9.00 02:00 9.00 02:15 9.00 02:30 9.00 02:45 9.00 03:00 9.00 03:15 8.67 03:30 9.00 03:45 9.00 04:00 8.67 04:15 8.67 04:30 9.00 04:45 9.00 05:00 8.00 05:15 8.00 05:30 8.33 05:45 8.33 06:00 8.33 06:15 8.33 06:30 8.00 06:45 8.00 07:00 8.00 07:15 8.00 07:30 8.00 07:45 8.33 08:00 8.33 08:15 8.33 08:30 8.33 08:45 8.33 09:00 8.00 09:15 8.00 09:30 8.00 09:45 8.00 10:00 8.00 10:15 8.00 10:30 8.00 10:45 8.00 11:00 7.67 11:15 7.00 11:30 7.00 11:45 8.00 12:00 7.67 12:15 7.67 12:30 7.67 12:45 7.33 13:00 7.67 13:15 7.67 13:30 8.00 13:45 8.00 14:00 8.00 14:15 8.00 14:30 7.67 14:45 7.33 15:00 7.33 15:15 7.33 15:30 7.33 15:45 7.33 16:00 7.33 16:15 7.33 16:30 7.00 16:45 7.00 17:00 7.00 17:15 7.00 17:30 6.67 17:45 6.67 18:00 6.67 18:15 6.67 18:30 6.33 18:45 6.33 19:00 6.33 19:15 6.00 19:30 6.00 19:45 6.33 20:00 6.67 20:15 6.33 20:30 6.00 20:45 6.00 21:00 6.00 21:15 5.33 21:30 5.67 21:45 6.33 22:00 5.33 22:15 5.33 22:30 5.33 22:45 5.00 23:00 5.33 23:15 5.00 23:30 5.00 23:45 4.67