Extra, in excess of - (comparative of `much' used with mass nouns) a quantifier this means better in size or amount of money or extent or degree; "extra land"; "extra assist"; "more rain fell"; "in excess of a gallon" ^ Figures provided are for values approximately 80 km (50 mi) https://emilioidnan.theisblog.com/36541396/what-does-oxygen-chambers-for-cancer-treatment-mean