condition	mean	min	max
0 h after light	15.91585	15.4067	16.425
4 h after light	13.1583	13.1176	13.199
8 h after light	23.3064	22.4942	24.1186
4 h after dark	28.49655	27.5533	29.4398
8 h after dark	19.598750000000003	18.2526	20.9449
12 h after dark	15.0846	14.9469	15.2223