Grand Geyser Statistics for 2009
From 01-Jan-09 to 31-Dec-09 Recent Eruptions
Statistics Season Last Month Last Week Time & Date Interval
Intervals 862 84 19 27/Dec/09 04:34:42 7:12:18
Minimum 6:13:00 6:23:54 6:31:36 27/Dec/09 13:44:42 9:10:00
5th percentile 6:54:00 6:50:34 7:08:14 27/Dec/09 23:46:24 10:01:42
1st Quartile 8:04:00 8:00:42 8:32:03 28/Dec/09 10:09:00 10:22:36
Mean 8:55:03 8:57:29 9:07:10 28/Dec/09 20:42:36 10:33:36
Median 8:52:30 9:05:03 9:10:00 29/Dec/09 03:14:12 6:31:36
3rd Quartile 9:44:06 9:51:48 10:01:42 29/Dec/09 11:29:12 8:15:00
95th percentile 11:04:00 11:03:25 10:35:02 29/Dec/09 22:17:06 10:47:54
Maximum 13:12:00 12:04:54 10:47:54 30/Dec/09 06:34:18 8:17:12
Range 6:59:00 5:41:00 4:16:18 30/Dec/09 13:48:48 7:14:30
Range - mid 90% 4:10:00 4:12:50 3:26:48 30/Dec/09 23:16:24 9:27:36
Std. Dev. 1:16:23 1:19:37 1:11:29 31/Dec/09 09:18:06 10:01:42
Coef. Of Var. 14.28% 14.81% 13.06% 31/Dec/09 18:05:00 8:46:54
Prediction vs Window
  Before In After
Last Week 0.0% 89.5% 10.5%
Last Month 1.2% 84.5% 14.3%
Prediction 8:30:00
Window - 2:00:00
Window + 2:00:00
Several breaks in data in Jan-March due to lost data files
No logger data from 17 Aug to 24 Aug--times are OFVC logbook times