condition	mean	min	max
4 h after light	18.0920185	14.252901	21.931136
8 h after light	15.788866500000001	12.03152	19.546213
12 h after light	14.5301205	13.389613	15.670628
4 h after dark	13.3506535	13.344523	13.356784
8 h after dark	13.797388999999999	13.073214	14.521564
12 h after dark	18.50395	18.50395	18.50395