If you could take all of the ozone, which is mostly about 10 to 20 miles up above our heads, and compress it down to the surface of the earth, it would form a thin shell only about two pennies thick, about an eighth of an inch.
Kdybyste mohli vzít všechen ozón, což je většina z 10-20 mil nad našimi hlavami, a stlačili ho k povrchu země, vytvořilo by to tenkou skořápku jen asi na dvě penny tlustou asi osminu palce (3,175 mm)