condition	mean	min	max
4 h after light	3.8610033333333336	3.785	3.94087
8 h after light	3.86526	3.83765	3.89425
12 h after light	3.85353	3.7214300000000002	4.03124
4 h after dark	3.790503333333333	3.73835	3.8168699999999998
8 h after dark	3.7342	3.67648	3.79491
12 h after dark	3.7693133333333333	3.73286	3.8348400000000002