15 09 2017 15-minute Estimated Geomagnetic Activity Index UT:min Kp 00:00 5.00 00:15 5.00 00:30 5.00 00:45 5.00 01:00 5.00 01:15 5.00 01:30 4.67 01:45 5.00 02:00 5.00 02:15 5.00 02:30 5.33 02:45 5.00 03:00 4.67 03:15 4.67 03:30 4.67 03:45 4.67 04:00 4.67 04:15 4.67 04:30 4.67 04:45 4.67 05:00 4.33 05:15 4.33 05:30 4.33 05:45 4.33 06:00 4.33 06:15 5.00 06:30 5.00 06:45 5.00 07:00 4.67 07:15 4.33 07:30 4.33 07:45 4.33 08:00 4.33 08:15 4.33 08:30 4.33 08:45 4.00 09:00 4.00 09:15 4.00 09:30 4.00 09:45 4.00 10:00 4.00 10:15 4.00 10:30 4.00 10:45 3.67 11:00 4.00 11:15 4.00 11:30 4.33 11:45 4.33 12:00 5.00 12:15 4.67 12:30 4.67 12:45 4.67 13:00 4.67 13:15 4.67 13:30 4.67 13:45 4.67 14:00 5.00 14:15 5.00 14:30 4.67 14:45 5.00 15:00 5.00 15:15 4.67 15:30 4.67 15:45 5.00 16:00 5.00 16:15 5.00 16:30 4.67 16:45 4.67 17:00 -1.00 17:15 -1.00 17:30 -1.00 17:45 -1.00 18:00 4.67 18:15 5.00 18:30 5.00 18:45 5.00 19:00 5.33 19:15 5.33 19:30 4.67 19:45 5.00 20:00 5.00 20:15 4.67 20:30 5.00 20:45 4.67 21:00 5.67 21:15 5.67 21:30 5.00 21:45 4.67 22:00 4.33 22:15 4.67 22:30 4.67 22:45 4.67 23:00 4.33 23:15 4.67 23:30 4.33 23:45 4.67