condition	mean	min	max
4 h after light	16.471200000000003	16.2724	16.67
8 h after light	14.601750000000001	12.2698	16.9337
12 h after light	15.663599999999999	14.7155	16.6117
4 h after dark	16.78813333333333	16.6255	17.0144
8 h after dark	19.592666666666666	17.8674	21.0277
12 h after dark	17.8775	16.2021	20.6237