condition	mean	min	max
4 h after light	7.2388	6.854430000000001	7.53631
8 h after light	6.80148	6.5295	7.2027600000000005
12 h after light	8.06567	7.29887	8.72219
4 h after dark	7.389806666666667	6.9915199999999995	8.083680000000001
8 h after dark	7.321586666666667	7.118939999999999	7.56365
12 h after dark	6.744643333333333	6.31442	6.9633199999999995