condition	mean	min	max
4 h after light	9.140583333333334	9.04367	9.287360000000001
8 h after light	8.94275	8.77262	9.08295
12 h after light	8.968286666666666	8.949819999999999	8.97787
4 h after dark	9.02023	8.86961	9.254660000000001
8 h after dark	9.002843333333333	8.916269999999999	9.16814
12 h after dark	8.914006666666667	8.70372	9.16469