condition	mean	min	max
4 h after light	3.599875	3.44685	3.7529
8 h after light	3.08929	3.0626	3.11598
12 h after light	3.16383	2.89035	3.43731
4 h after dark	3.60903	3.29945	3.91861
8 h after dark	3.880495	3.73706	4.02393
12 h after dark	3.544365	3.40961	3.67912