condition	mean	min	max
4 h after light	8.285663333333334	8.19563	8.36295
8 h after light	8.31057	8.24135	8.34543
12 h after light	8.435286666666666	8.27201	8.52886
4 h after dark	8.803566666666667	8.753589999999999	8.87314
8 h after dark	9.06775	8.95075	9.23126
12 h after dark	9.1076	8.90875	9.42765