condition	mean	min	max
4 h after light	8.24545	8.17335	8.35235
8 h after light	8.2731	8.21237	8.33876
12 h after light	7.99718	7.798360000000001	8.1298
4 h after dark	8.412886666666665	8.25157	8.61225
8 h after dark	8.224163333333333	8.12933	8.28778
12 h after dark	8.419730000000001	8.25455	8.566880000000001