condition	mean	min	max
4 h after light	7.50488	4.89511	8.95822
8 h after light	6.264783333333334	1.90503	10.3094
12 h after light	9.15634	4.86382	14.0407
4 h after dark	12.122906666666667	8.54582	14.6155
8 h after dark	9.90733	7.68809	11.1708
12 h after dark	9.765803333333333	8.51125	11.5634