condition	mean	min	max
4 h after light	17.8981505	16.750847	19.045454
8 h after light	22.033098	18.093334	25.972862
12 h after light	32.4781135	21.643025	43.313202
4 h after dark	19.6247495	19.045454	20.204045
8 h after dark	18.9982015	18.91151	19.084893
12 h after dark	16.719976	16.719976	16.719976