condition	mean	min	max
4 h after light	8.383412	8.349223	8.417601
8 h after light	8.4170585	7.946523	8.887594
12 h after light	7.5364165	7.147895	7.924938
4 h after dark	8.8592425	8.349602	9.368883
8 h after dark	9.3638815	8.905533	9.82223
12 h after dark	8.417601	8.417601	8.417601