condition	mean	min	max
4 h after light	19.10635	16.0204	22.1923
8 h after light	19.389699999999998	18.7032	20.0762
12 h after light	17.7563	17.2233	18.2893
4 h after dark	27.7914	26.2532	29.3296
8 h after dark	28.83265	27.9318	29.7335
12 h after dark	30.6261	29.7646	31.4876