condition	mean	min	max
0 h after light	9.58248	9.32743	9.83753
4 h after light	7.041615	6.68785	7.39538
8 h after light	7.457695	6.78068	8.13471
4 h after dark	8.19814	7.09337	9.30291
8 h after dark	8.614545	8.55445	8.67464
12 h after dark	8.612214999999999	7.51702	9.70741