condition	mean	min	max
4 h after light	17.138085500000003	16.879801	17.39637
8 h after light	21.900540999999997	18.727095	25.073987
12 h after light	16.6293145	14.462106	18.796523
4 h after dark	17.014146	16.917478	17.110814
8 h after dark	17.972285499999998	17.906172	18.038399
12 h after dark	13.426589	13.426589	13.426589