Silly boy..... you forgot to factor in terrestrial refraction....
http://aty.sdsu.edu/~aty/explain/atm...r/horizon.html
Which means you can see more than ground level 11 miles to the horizon when the conditions are right. Here you can see from St. Clair Shores Champine Park [[12 Mile & Jefferson) the 20 or so miles to the distant windfarm on the Canadian shore due east... [[even trees are visible on the far side).
https://www.flickr.com/photos/on_the...-8Fk7ZE-b9QNEx
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