condition	mean	min	max
4 h after light	6.824726666666667	6.786630000000001	6.881289999999999
8 h after light	6.654476666666667	6.52924	6.783689999999999
12 h after light	6.69688	6.59262	6.841469999999999
4 h after dark	6.677063333333334	6.57556	6.7314
8 h after dark	6.696619999999999	6.51685	6.816739999999999
12 h after dark	6.872736666666667	6.793660000000001	6.9715300000000004