condition	mean	min	max
4 h after light	12.7967415	11.772434	13.821049
8 h after light	13.673308500000001	13.265805	14.080812
12 h after light	14.933789999999998	13.793714	16.073866
4 h after dark	19.378839499999998	16.053639	22.70404
8 h after dark	25.529226	23.152988	27.905464
12 h after dark	15.963996	15.963996	15.963996