condition	mean	min	max
4 h after light	6.076103333333333	5.90988	6.28262
8 h after light	5.8214500000000005	5.5052900000000005	6.14046
12 h after light	5.82646	5.60979	6.00988
4 h after dark	5.978196666666666	5.8408	6.17224
8 h after dark	5.961250000000001	5.800330000000001	6.203530000000001
12 h after dark	6.519303333333333	6.48539	6.57764