condition	mean	min	max
4 h after light	6.80967	6.57078	6.93323
8 h after light	6.694146666666667	6.54552	6.90883
12 h after light	6.7322733333333336	6.59795	6.9436
4 h after dark	6.76994	6.62617	6.985119999999999
8 h after dark	6.74808	6.71263	6.81498
12 h after dark	6.793023333333333	6.6969899999999996	6.86539