condition	mean	min	max
4 h after light	16.184776	14.01973	18.349822
8 h after light	17.0746635	15.374833	18.774494
12 h after light	16.4166135	15.674402	17.158825
4 h after dark	19.416151	16.924532	21.90777
8 h after dark	15.5850775	14.843927	16.326228
12 h after dark	20.481611	20.481611	20.481611