condition	mean	min	max
4 h after light	6.90132	5.53612	8.26652
8 h after light	5.630825	5.31276	5.94889
12 h after light	6.336925	5.47804	7.19581
4 h after dark	30.875349999999997	30.5585	31.1922
8 h after dark	22.37695	21.525	23.2289
12 h after dark	15.7568	15.6412	15.8724