Team, I am studying for knowledge test. I am not a pilot. Hope you can clarify this about class E and G airspace. If you look at Barnes County airport ( BAC), what is the floor of Class E inside and outside the magenta circle, is it 700 feet AGL, or 1,200 AGL...why..how you know? I cant differentiate it based on charts legends. I think this is important for UAS remote pilots as we can fly in class G, and the floor of class E will be our class G ceiling.