condition	mean	min	max
4 h after light	16.798924	15.998988	17.59886
8 h after light	19.3238795	18.016026	20.631733
12 h after light	21.113920999999998	18.862786	23.365056
4 h after dark	18.3125015	16.801244	19.823759
8 h after dark	20.292495	19.928109	20.656881
12 h after dark	13.672326	13.672326	13.672326