condition	mean	min	max
0 h after light	6.984635	6.29234	7.67693
4 h after light	8.084445	7.70666	8.46223
8 h after light	10.80445	9.7328	11.8761
4 h after dark	9.340535	9.18476	9.49631
8 h after dark	7.594135	7.21715	7.97112
12 h after dark	6.48316	6.13606	6.83026