condition	mean	min	max
4 h after light	7.9974300000000005	7.88048	8.07523
8 h after light	8.15156	8.11922	8.21402
12 h after light	8.075036666666666	7.9882	8.12152
4 h after dark	8.139206666666666	7.956339999999999	8.2605
8 h after dark	8.161583333333333	8.118910000000001	8.197389999999999
12 h after dark	8.115426666666666	8.08351	8.16422