condition	mean	min	max
4 h after light	4.589365	4.26751	4.91122
8 h after light	6.770115	6.62759	6.91264
12 h after light	5.804855	5.49864	6.11107
4 h after dark	9.327055	8.65447	9.99964
8 h after dark	8.10658	7.89502	8.31814
12 h after dark	7.667475	7.62602	7.70893