condition	mean	min	max
4 h after light	20.2076985	16.890433	23.524964
8 h after light	16.230544	14.667262	17.793826
12 h after light	17.303137	16.950403	17.655871
4 h after dark	18.16406	18.029012	18.299108
8 h after dark	21.598867	20.020119	23.177615
12 h after dark	21.5618	21.5618	21.5618