31 01 2017 15-minute Estimated Geomagnetic Activity Index UT:min Kp 00:00 3.00 00:15 3.00 00:30 3.00 00:45 3.00 01:00 3.00 01:15 3.33 01:30 3.67 01:45 4.00 02:00 3.67 02:15 3.67 02:30 3.67 02:45 3.67 03:00 4.00 03:15 4.00 03:30 4.00 03:45 4.00 04:00 4.00 04:15 4.00 04:30 4.33 04:45 4.33 05:00 4.00 05:15 4.00 05:30 4.00 05:45 4.00 06:00 4.00 06:15 4.33 06:30 4.33 06:45 4.33 07:00 4.33 07:15 4.33 07:30 4.67 07:45 5.00 08:00 5.00 08:15 4.67 08:30 4.67 08:45 5.00 09:00 4.67 09:15 4.67 09:30 5.00 09:45 5.00 10:00 5.00 10:15 5.00 10:30 5.00 10:45 4.33 11:00 4.33 11:15 4.33 11:30 4.33 11:45 4.33 12:00 4.67 12:15 4.67 12:30 4.67 12:45 4.67 13:00 5.00 13:15 5.33 13:30 5.33 13:45 5.33 14:00 5.00 14:15 5.33 14:30 5.67 14:45 6.33 15:00 5.67 15:15 6.00 15:30 6.00 15:45 6.00 16:00 6.33 16:15 6.33 16:30 5.67 16:45 5.67 17:00 5.67 17:15 5.67 17:30 5.67 17:45 5.67 18:00 5.67 18:15 6.00 18:30 5.67 18:45 6.00 19:00 5.67 19:15 5.67 19:30 5.67 19:45 5.33 20:00 5.67 20:15 5.33 20:30 6.67 20:45 5.67 21:00 5.67 21:15 5.33 21:30 5.33 21:45 5.33 22:00 5.67 22:15 5.67 22:30 5.00 22:45 5.67 23:00 5.67 23:15 6.00 23:30 6.00 23:45 5.33