17 12 2017 15-minute Estimated Geomagnetic Activity Index UT:min Kp 00:00 3.00 00:15 3.00 00:30 2.67 00:45 2.67 01:00 2.33 01:15 2.67 01:30 2.67 01:45 2.67 02:00 2.67 02:15 2.67 02:30 2.67 02:45 2.67 03:00 2.67 03:15 2.67 03:30 3.00 03:45 3.33 04:00 3.33 04:15 3.67 04:30 4.00 04:45 4.00 05:00 4.33 05:15 4.33 05:30 4.00 05:45 4.00 06:00 4.00 06:15 4.33 06:30 4.67 06:45 4.67 07:00 4.67 07:15 4.67 07:30 4.67 07:45 4.67 08:00 4.67 08:15 4.67 08:30 4.33 08:45 4.33 09:00 4.00 09:15 4.00 09:30 4.00 09:45 4.00 10:00 4.33 10:15 4.33 10:30 4.33 10:45 4.67 11:00 4.33 11:15 4.33 11:30 4.33 11:45 4.67 12:00 4.67 12:15 4.67 12:30 4.67 12:45 5.00 13:00 5.00 13:15 4.67 13:30 5.00 13:45 5.00 14:00 5.33 14:15 5.00 14:30 5.33 14:45 5.00 15:00 5.00 15:15 5.00 15:30 5.00 15:45 4.67 16:00 4.67 16:15 4.33 16:30 4.67 16:45 5.00 17:00 4.67 17:15 4.67 17:30 4.67 17:45 4.67 18:00 5.00 18:15 4.67 18:30 4.33 18:45 4.33 19:00 4.33 19:15 4.00 19:30 4.00 19:45 4.67 20:00 4.67 20:15 4.67 20:30 4.33 20:45 4.33 21:00 5.00 21:15 4.67 21:30 4.33 21:45 4.33 22:00 4.33 22:15 4.33 22:30 4.33 22:45 4.33 23:00 4.00 23:15 -1.00 23:30 4.00 23:45 4.00