condition	mean	min	max
4 h after light	17.930596	17.895044	17.966148
8 h after light	18.995359999999998	16.881069	21.109651
12 h after light	21.2863865	20.106957	22.465816
4 h after dark	21.3640525	20.106957	22.621148
8 h after dark	30.6698525	20.641452	40.698253
12 h after dark	20.106957	20.106957	20.106957