condition	mean	min	max
4 h after light	6.784806666666666	6.60335	6.89894
8 h after light	6.98287	6.843310000000001	7.11295
12 h after light	7.2295	7.135210000000001	7.285539999999999
4 h after dark	7.057566666666666	7.02647	7.07826
8 h after dark	7.07166	6.93035	7.170889999999999
12 h after dark	7.067516666666666	6.95255	7.205660000000001