condition	mean	min	max
4 h after light	17.2362405	15.948162	18.524319
8 h after light	14.7587485	14.142906	15.374591
12 h after light	16.715654	15.500576	17.930732
4 h after dark	13.9177775	13.127139	14.708416
8 h after dark	15.378529499999999	14.910335	15.846724
12 h after dark	22.585439	22.585439	22.585439