condition	mean	min	max
4 h after light	7.94079	7.56782	8.31376
8 h after light	9.508045	8.50509	10.511
12 h after light	10.09161	9.89542	10.2878
4 h after dark	17.06075	15.8883	18.2332
8 h after dark	16.49735	15.3457	17.649
12 h after dark	12.9093	12.2247	13.5939