condition	mean	min	max
4 h after light	3.945766666666666	3.7665699999999998	4.0418199999999995
8 h after light	3.8624333333333336	3.80418	3.9765300000000003
12 h after light	3.8741433333333335	3.7893800000000004	3.97911
4 h after dark	4.07545	3.8832	4.31675
8 h after dark	4.111753333333334	3.86009	4.41582
12 h after dark	4.26797	4.195819999999999	4.322