condition	mean	min	max
4 h after light	7.9530899999999995	7.9253	7.98283
8 h after light	7.756716666666667	7.68823	7.866910000000001
12 h after light	7.84844	7.81835	7.880389999999999
4 h after dark	8.136053333333333	8.045630000000001	8.29706
8 h after dark	8.234143333333332	8.01855	8.44159
12 h after dark	8.237523333333334	8.1083	8.39524