condition	mean	min	max
4 h after light	7.61223	6.7441	8.48036
8 h after light	8.09833	7.59983	8.59683
12 h after light	10.42014	9.10838	11.7319
4 h after dark	11.684666666666667	11.2548	12.1747
8 h after dark	11.1793	10.0885	11.8268
12 h after dark	8.258153333333333	6.44709	9.42376