condition	mean	min	max
4 h after light	8.879926666666666	8.71991	9.07317
8 h after light	8.947140000000001	8.731060000000001	9.06145
12 h after light	8.8666	8.73818	8.98293
4 h after dark	9.01877	8.85412	9.14643
8 h after dark	9.138403333333333	9.05715	9.21289
12 h after dark	9.333736666666667	9.20912	9.464360000000001