condition	mean	min	max
4 h after light	3.95831	3.86765	4.12219
8 h after light	3.98317	3.90522	4.10379
12 h after light	3.910493333333333	3.86665	3.97056
4 h after dark	4.003763333333334	3.9638699999999996	4.0701
8 h after dark	3.95461	3.9001	4.03135
12 h after dark	3.9952133333333335	3.90705	4.1330800000000005