condition	mean	min	max
4 h after light	6.093396666666666	5.8419	6.32417
8 h after light	6.004239999999999	5.9304	6.05362
12 h after light	6.08019	6.02765	6.17719
4 h after dark	6.042323333333333	5.92976	6.12059
8 h after dark	5.88043	5.82336	5.98197
12 h after dark	5.96666	5.88664	6.0247