10 instances from 2 years 2017 - 1 instance Jan 18 Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 2016 - 9 instances Jan Feb Mar Apr May Jun Jul Aug Sep 20 4 Sep 20, 2016 4 instances 01:13:31 01:45:56 01:51:18 01:51:18 Oct 2 2 Oct 2, 2016 2 instances 14:03:59 19:37:58 4 2 Oct 4, 2016 2 instances 14:23:04 23:41:33 5 Nov Dec