condition	mean	min	max
4 h after light	8.13042	8.00535	8.19621
8 h after light	8.24632	8.022260000000001	8.40155
12 h after light	8.35413	8.04751	8.58479
4 h after dark	8.240126666666667	7.8997	8.49581
8 h after dark	8.10254	7.797289999999999	8.3021
12 h after dark	8.05409	7.915539999999999	8.161610000000001