23 02 2015 15-minute Estimated Geomagnetic Activity Index UT:min Kp 00:00 2.67 00:15 2.33 00:30 2.33 00:45 2.67 01:00 2.33 01:15 2.33 01:30 2.33 01:45 2.33 02:00 2.33 02:15 2.67 02:30 3.00 02:45 2.67 03:00 2.67 03:15 3.00 03:30 3.00 03:45 3.33 04:00 2.67 04:15 2.67 04:30 2.67 04:45 3.00 05:00 3.67 05:15 3.67 05:30 3.33 05:45 3.33 06:00 3.33 06:15 3.67 06:30 3.67 06:45 3.67 07:00 3.67 07:15 3.67 07:30 4.00 07:45 4.33 08:00 4.33 08:15 4.33 08:30 4.33 08:45 4.33 09:00 4.00 09:15 4.00 09:30 4.33 09:45 4.00 10:00 4.00 10:15 4.00 10:30 4.00 10:45 4.33 11:00 4.67 11:15 4.67 11:30 5.00 11:45 5.00 12:00 4.67 12:15 4.00 12:30 4.00 12:45 4.00 13:00 3.67 13:15 3.67 13:30 3.33 13:45 3.67 14:00 3.67 14:15 3.33 14:30 3.67 14:45 4.00 15:00 3.67 15:15 4.00 15:30 4.00 15:45 3.67 16:00 4.00 16:15 4.00 16:30 4.00 16:45 4.00 17:00 4.67 17:15 4.67 17:30 4.33 17:45 4.33 18:00 4.33 18:15 4.33 18:30 4.33 18:45 4.33 19:00 4.67 19:15 4.33 19:30 4.00 19:45 4.00 20:00 4.00 20:15 4.33 20:30 4.00 20:45 4.00 21:00 4.33 21:15 4.00 21:30 4.00 21:45 3.67 22:00 3.67 22:15 3.33 22:30 3.67 22:45 3.33 23:00 3.67 23:15 4.00 23:30 4.00 23:45 3.67