condition	mean	min	max
4 h after light	3.9601200000000003	3.88732	4.073580000000001
8 h after light	4.005816666666667	3.9639900000000003	4.0871
12 h after light	4.101123333333334	4.00371	4.20752
4 h after dark	4.005256666666667	3.9336800000000003	4.10637
8 h after dark	4.19283	3.99295	4.41615
12 h after dark	4.03918	3.9815699999999996	4.1234