condition	mean	min	max
4 h after light	3.9637700000000002	3.8380400000000003	4.06152
8 h after light	4.056873333333333	3.9115599999999997	4.14936
12 h after light	4.052393333333334	4.00905	4.12507
4 h after dark	4.028663333333333	3.9821699999999995	4.10198
8 h after dark	3.979816666666667	3.92265	4.06135
12 h after dark	3.961753333333333	3.8973699999999996	4.023569999999999