condition	mean	min	max
4 h after light	6.6482866666666665	4.88815	8.32221
8 h after light	4.72856	1.43184	8.0317
12 h after light	5.92931	3.6508	8.39004
4 h after dark	6.3885	5.65182	7.78278
8 h after dark	6.720096666666667	4.74447	8.2421
12 h after dark	7.716986666666666	6.73223	9.15786