condition	mean	min	max
4 h after light	15.90986	8.16388	23.1829
8 h after light	9.869016666666667	2.07015	16.7029
12 h after light	12.013259999999999	6.55388	17.9377
4 h after dark	17.837933333333332	14.0435	21.9728
8 h after dark	16.08728	9.76104	20.3935
12 h after dark	17.4091	14.6656	19.8556