condition	mean	min	max
4 h after light	6.628673333333333	6.4069400000000005	6.787789999999999
8 h after light	6.958006666666667	6.71588	7.31181
12 h after light	7.28819	7.1061	7.43618
4 h after dark	7.156463333333333	6.779889999999999	7.60456
8 h after dark	6.97395	6.510330000000001	7.429760000000001
12 h after dark	6.636076666666667	6.495	6.73442