condition	mean	min	max
4 h after light	6.74213	5.68024	7.80402
8 h after light	12.0664	10.6203	13.5125
12 h after light	6.476795	6.07911	6.87448
4 h after dark	12.18135	11.9417	12.421
8 h after dark	10.545955	9.90441	11.1875
12 h after dark	8.832535	8.79048	8.87459