https://www.proz.com/personal-glossaries/entry/35721664-the-region-that-contains-the-80th-centile-%D0%BF%D1%80%D0%BE%D0%B8%D0%B7%D0%B2%D0%BE%D0%B4%D0%B8%D1%82%D0%B5%D0%BB%D1%8C%D0%BD%D0%BE%D1%81%D1%82%D1%8C-%D0%BC%D0%B8%D0%BD%D0%B5%D1%80%D0%B0%D0%BB%D1%8C%D0%BD%D0%BE%D0%B9-%D1%88%D0%B0%D1%85%D1%82%D1%8B-%D0%B2%D1%8B%D1%80%D0%B0%D0%B6%D0%B5%D0%BD%D0%BDa%D1%8F-%D0%B2-%D1%86%D0%B5%D0%BD%D1%82%D0%B8%D0%BB%D1%8F%D1%85