05 01 2008 15-minute Estimated Geomagnetic Activity Index UT:min Kp 00:00 1.33 00:15 1.67 00:30 1.67 00:45 2.00 01:00 2.00 01:15 2.00 01:30 2.33 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 2.33 03:30 3.33 03:45 3.33 04:00 3.67 04:15 3.33 04:30 3.33 04:45 3.33 05:00 3.67 05:15 4.00 05:30 3.00 05:45 3.33 06:00 4.33 06:15 4.00 06:30 3.67 06:45 3.33 07:00 3.00 07:15 4.00 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 4.33 09:15 4.33 09:30 4.33 09:45 4.33 10:00 3.67 10:15 3.67 10:30 4.00 10:45 4.00 11:00 4.00 11:15 3.67 11:30 3.67 11:45 4.00 12:00 4.00 12:15 4.00 12:30 4.00 12:45 4.00 13:00 4.33 13:15 4.33 13:30 4.00 13:45 4.33 14:00 4.33 14:15 4.00 14:30 3.67 14:45 4.00 15:00 4.33 15:15 4.33 15:30 4.33 15:45 4.33 16:00 4.33 16:15 4.33 16:30 4.33 16:45 4.33 17:00 4.33 17:15 4.00 17:30 4.33 17:45 4.33 18:00 4.00 18:15 3.67 18:30 4.00 18:45 4.00 19:00 4.00 19:15 3.67 19:30 3.67 19:45 4.00 20:00 4.00 20:15 4.00 20:30 4.00 20:45 4.00 21:00 4.00 21:15 4.00 21:30 4.00 21:45 4.00 22:00 4.00 22:15 4.33 22:30 4.33 22:45 4.67 23:00 4.33 23:15 -1.00 23:30 -1.00 23:45 -1.00