condition	mean	min	max
4 h after light	6.7316199999999995	4.77567	8.68757
8 h after light	6.466035	5.15899	7.77308
12 h after light	11.12237	8.66354	13.5812
4 h after dark	17.68345	17.2099	18.157
8 h after dark	17.17885	15.7291	18.6286
12 h after dark	16.0863	13.1535	19.0191