13 09 2007 15-minute Estimated Geomagnetic Activity Index UT:min Kp 00:00 0.33 00:15 0.33 00:30 0.33 00:45 -1.00 01:00 -1.00 01:15 -1.00 01:30 -1.00 01:45 -1.00 02:00 -1.00 02:15 -1.00 02:30 -1.00 02:45 -1.00 03:00 -1.00 03:15 -1.00 03:30 -1.00 03:45 -1.00 04:00 -1.00 04:15 -1.00 04:30 -1.00 04:45 -1.00 05:00 -1.00 05:15 -1.00 05:30 -1.00 05:45 -1.00 06:00 -1.00 06:15 -1.00 06:30 -1.00 06:45 -1.00 07:00 0.33 07:15 0.33 07:30 0.33 07:45 0.33 08:00 0.67 08:15 0.67 08:30 0.67 08:45 0.67 09:00 0.67 09:15 0.67 09:30 0.67 09:45 0.67 10:00 0.67 10:15 0.67 10:30 0.67 10:45 0.67 11:00 0.67 11:15 0.67 11:30 0.67 11:45 0.67 12:00 0.67 12:15 0.67 12:30 0.67 12:45 0.33 13:00 0.33 13:15 0.33 13:30 0.33 13:45 0.33 14:00 0.33 14:15 0.33 14:30 0.33 14:45 0.33 15:00 0.33 15:15 0.33 15:30 0.33 15:45 0.33 16:00 0.33 16:15 0.33 16:30 0.33 16:45 0.33 17:00 0.33 17:15 0.33 17:30 0.33 17:45 0.33 18:00 0.33 18:15 0.67 18:30 0.67 18:45 0.67 19:00 0.67 19:15 0.67 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 1.00 21:15 1.00 21:30 1.00 21:45 1.00 22:00 1.33 22:15 1.33 22:30 -1.00 22:45 -1.00 23:00 -1.00 23:15 -1.00 23:30 -1.00 23:45 -1.00