condition	mean	min	max
4 h after light	7.484726666666667	7.236910000000001	7.78856
8 h after light	6.962606666666666	6.8398699999999995	7.141539999999999
12 h after light	7.344776666666667	7.000960000000001	7.711110000000001
4 h after dark	7.723669999999999	7.39007	8.15209
8 h after dark	7.7667	7.49055	8.18802
12 h after dark	7.7550099999999995	7.52957	8.18754