condition	mean	min	max
4 h after light	18.4339	14.3644	26.0322
8 h after light	9.575626666666667	2.71728	15.11
12 h after light	8.367183333333333	4.55908	13.0256
4 h after dark	11.00594	6.39892	15.3569
8 h after dark	14.054179999999999	9.65674	16.8053
12 h after dark	16.299066666666665	12.5445	21.9287