condition	mean	min	max
4 h after light	17.6832	16.6127	18.7537
8 h after light	19.9835	19.5812	20.3858
12 h after light	20.83015	19.5825	22.0778
4 h after dark	22.635550000000002	21.9453	23.3258
8 h after dark	21.271700000000003	21.0377	21.5057
12 h after dark	20.81145	20.5675	21.0554