condition	mean	min	max
4 h after light	4.09054	4.0435099999999995	4.17721
8 h after light	4.17856	4.08062	4.26117
12 h after light	4.117086666666667	3.9898800000000003	4.2535
4 h after dark	4.15488	4.03662	4.26004
8 h after dark	4.0496533333333335	3.9691	4.09391
12 h after dark	3.9833333333333334	3.9555599999999997	4.03886