condition	mean	min	max
4 h after light	20.992394	19.596968	22.38782
8 h after light	18.4449535	15.687497	21.20241
12 h after light	14.7270755	11.879314	17.574837
4 h after dark	18.7563195	14.736395	22.776244
8 h after dark	14.047159	13.970243	14.124075
12 h after dark	16.115489	16.115489	16.115489