condition	mean	min	max
4 h after light	39.03915	38.2033	39.875
8 h after light	25.3283	24.0012	26.6554
12 h after light	21.7994	21.0237	22.5751
4 h after dark	19.39365	18.7257	20.0616
8 h after dark	29.27465	27.6085	30.9408
12 h after dark	33.10625	31.8426	34.3699