condition	mean	min	max
4 h after light	16.642077	14.577886	18.706268
8 h after light	17.8261525	14.711667	20.940638
12 h after light	13.910178	12.279375	15.540981
4 h after dark	17.247813999999998	14.948984	19.546644
8 h after dark	14.9507875	13.904692	15.996883
12 h after dark	12.863272	12.863272	12.863272