CREATE TABLE table_79286 ("TV Station  ( Operator ) " TEXT, "2005" FLOAT, "2006" FLOAT, "2007" FLOAT, "2008" FLOAT, "2009" FLOAT, "2010" FLOAT, "2011 1H" FLOAT)

What is the highest 2011 1H value for a 2005 over 28?
SELECT MAX("2011 1H") FROM table_79286 WHERE "2005" > '28'
SELECT MAX("2011 1H") FROM "table_79286" WHERE "2005" > '28'