condition	mean	min	max
4 h after light	5.95699	3.93066	7.98332
8 h after light	8.722075	7.53436	9.90979
12 h after light	17.4681	16.0461	18.8901
4 h after dark	11.27131	9.79312	12.7495
8 h after dark	6.439285	6.18349	6.69508
12 h after dark	5.894435	5.78492	6.00395