condition	mean	min	max
4 h after light	7.004776666666666	6.72492	7.1698699999999995
8 h after light	7.4744600000000005	7.37697	7.6101
12 h after light	7.725653333333333	7.54312	7.907489999999999
4 h after dark	7.81967	7.6807300000000005	8.08453
8 h after dark	7.720566666666667	7.5043	8.04919
12 h after dark	7.7397366666666665	7.350239999999999	8.0645