condition	mean	min	max
4 h after light	7.60792	7.35458	7.77302
8 h after light	6.741363333333333	6.63806	6.91643
12 h after light	6.66036	6.49763	6.7553600000000005
4 h after dark	6.958283333333333	6.81055	7.0632399999999995
8 h after dark	7.697900000000001	7.64186	7.776680000000001
12 h after dark	8.475819999999999	8.4302	8.51384