condition	mean	min	max
4 h after light	8.279826666666667	7.85123	8.512789999999999
8 h after light	8.112913333333333	7.694089999999999	8.33212
12 h after light	8.15047	7.663069999999999	8.48681
4 h after dark	8.45433	8.10116	8.64936
8 h after dark	8.397646666666667	7.6742	8.84985
12 h after dark	8.58299	7.9572	8.914489999999999