condition	mean	min	max
4 h after light	6.236335	6.20279	6.26988
8 h after light	4.721335	4.65798	4.78469
12 h after light	5.93815	5.84297	6.03333
4 h after dark	7.301635	7.17113	7.43214
8 h after dark	8.49264	8.23888	8.7464
12 h after dark	7.938655	7.78416	8.09315