condition	mean	min	max
4 h after light	15.832783333333333	15.37592	16.13233
8 h after light	12.119359000000001	7.535286999999999	16.426460000000002
12 h after light	19.149449999999998	16.42602	21.0567
16 h after light	20.60838	18.19446	22.375970000000002
4 h after dark	30.088540000000002	24.60833	33.06862
8 h after dark	16.217153333333332	14.067089999999999	20.479