condition	mean	min	max
4 h after light	20.37295	20.2333	20.5126
8 h after light	18.08215	17.7256	18.4387
12 h after light	20.7877	19.3563	22.2191
4 h after dark	25.47845	25.1591	25.7978
8 h after dark	32.12045	31.1561	33.0848
12 h after dark	29.50775	29.1063	29.9092