condition	mean	min	max
4 h after light	9.19556	8.98451	9.476569999999999
8 h after light	8.75124	8.0195	9.52277
12 h after light	7.483953333333333	7.101539999999999	8.052439999999999
4 h after dark	8.027346666666666	7.559060000000001	8.30155
8 h after dark	8.72756	8.55434	8.84608
12 h after dark	9.197743333333333	9.05697	9.423010000000001