condition	mean	min	max
4 h after light	7.77729	7.726380000000001	7.87412
8 h after light	8.482173333333332	8.39458	8.548689999999999
12 h after light	8.255583333333334	8.18862	8.37222
4 h after dark	7.97038	7.69468	8.14518
8 h after dark	7.9010299999999996	7.747739999999999	8.14938
12 h after dark	7.4885866666666665	7.312810000000001	7.7256100000000005