condition	mean	min	max
0 h after light	15.730550000000001	14.8169	16.6442
4 h after light	7.955495	7.04912	8.86187
8 h after light	7.34292	6.70959	7.97625
4 h after dark	14.7463	12.3586	17.134
8 h after dark	14.90135	13.7344	16.0683
12 h after dark	12.0726	10.1642	13.981