condition	mean	min	max
4 h after light	6.110250000000001	5.990130000000001	6.27522
8 h after light	6.067773333333333	6.004569999999999	6.11515
12 h after light	5.90515	5.80435	5.97559
4 h after dark	6.123723333333333	5.74728	6.40623
8 h after dark	6.081193333333333	5.90551	6.23269
12 h after dark	6.189823333333333	5.96709	6.42171