04 06 2015 15-minute Estimated Geomagnetic Activity Index UT:min Kp 00:00 0.67 00:15 0.67 00:30 0.67 00:45 0.67 01:00 0.67 01:15 0.67 01:30 0.67 01:45 0.67 02:00 0.67 02:15 0.67 02:30 0.67 02:45 0.67 03:00 1.00 03:15 2.33 03:30 1.67 03:45 1.00 04:00 2.33 04:15 0.67 04:30 1.00 04:45 0.67 05:00 0.67 05:15 1.33 05:30 0.67 05:45 1.33 06:00 1.00 06:15 0.67 06:30 1.00 06:45 0.67 07:00 0.67 07:15 0.67 07:30 0.67 07:45 1.00 08:00 0.33 08:15 0.33 08:30 0.67 08:45 0.33 09:00 0.33 09:15 0.67 09:30 0.67 09:45 0.33 10:00 1.00 10:15 0.67 10:30 0.67 10:45 0.67 11:00 0.67 11:15 0.33 11:30 1.00 11:45 0.33 12:00 0.33 12:15 0.33 12:30 0.33 12:45 0.67 13:00 0.67 13:15 0.67 13:30 0.67 13:45 0.67 14:00 1.33 14:15 1.00 14:30 1.00 14:45 1.00 15:00 1.67 15:15 1.33 15:30 1.00 15:45 1.00 16:00 1.00 16:15 1.67 16:30 1.00 16:45 2.00 17:00 1.67 17:15 1.67 17:30 0.67 17:45 1.67 18:00 1.00 18:15 1.00 18:30 1.33 18:45 2.00 19:00 1.67 19:15 1.33 19:30 0.67 19:45 0.67 20:00 0.67 20:15 0.67 20:30 0.67 20:45 0.67 21:00 0.67 21:15 0.67 21:30 0.67 21:45 0.67 22:00 0.67 22:15 0.67 22:30 0.67 22:45 0.67 23:00 0.67 23:15 0.67 23:30 0.67 23:45 0.67