condition	mean	min	max
4 h after light	16.486214	14.724646	18.247782
8 h after light	19.6081055	19.488908	19.727303
12 h after light	18.960433000000002	16.027175	21.893691
4 h after dark	18.012158499999998	17.202652	18.821665
8 h after dark	18.02955	15.925235	20.133865
12 h after dark	18.083636	18.083636	18.083636