condition	mean	min	max
4 h after light	17.107599999999998	15.4696	18.7456
8 h after light	17.9375	17.8755	17.9995
12 h after light	19.02955	16.7784	21.2807
4 h after dark	24.7287	22.3093	27.1481
8 h after dark	23.46895	23.1973	23.7406
12 h after dark	21.65345	21.6201	21.6868