condition	mean	min	max
4 h after light	15.210350000000002	11.9793	18.4414
8 h after light	15.721900000000002	15.646	15.7978
12 h after light	16.70965	15.7917	17.6276
4 h after dark	18.4506	15.5036	20.6755
8 h after dark	19.420066666666667	19.002	19.7113
12 h after dark	17.809933333333333	14.7166	20.5763