condition	mean	min	max
4 h after light	7.867290000000001	7.2983	8.43628
8 h after light	6.3953299999999995	6.30557	6.48509
12 h after light	6.794535	6.46747	7.1216
4 h after dark	8.21187	8.0153	8.52634
8 h after dark	8.66415	7.97342	9.72126
12 h after dark	7.1910300000000005	6.77514	7.854