condition	mean	min	max
4 h after light	15.2	15.2	15.2
8 h after light	18.15	15.0	21.3
12 h after light	52.0	34.4	69.6
4 h after dark	25.65	9.4	41.9
8 h after dark	46.3	38.4	54.2
12 h after dark	54.55	46.0	63.1