condition	mean	min	max
4 h after light	6.57671	6.09175	7.06167
8 h after light	5.349945	4.95759	5.7423
12 h after light	7.11676	6.61178	7.62174
4 h after dark	10.1531	10.0729	10.2333
8 h after dark	9.402515000000001	9.33566	9.46937
12 h after dark	8.94876	8.72272	9.1748