condition	mean	min	max
4 h after light	16.1209	14.4019	17.8399
8 h after light	15.737649999999999	13.0114	18.4639
12 h after light	17.18345	16.1948	18.1721
4 h after dark	19.5911	14.4403	23.3613
8 h after dark	19.916066666666666	16.6445	25.6833
12 h after dark	12.850166666666667	11.2694	14.8605