On Aug 31, 6:01 pm, "Steven P. McNicoll"
wrote:

At 36N 87W, starting at the surface and working up, the airspace is Class G
to 1200 AGL, Class E to FL 180, Class A to FL 600, and Class E to where
airspace becomes just space.

Please forgive my ignorance as I learn to read an aeronautical chart.
Looking at the legend it appears Class E is the purple gradient circle
and Class C is the solid line around Nashville. How do you interpret
that 36N 87W is in Class E, as it is outside that gradient circle? Is
Class E space "just everywhere" like Class A? If it is, why label it
separately on charts?

Thanks.