user: ### NOW ANSWER:
Question: What is the highest 2011 1H value for a 2005 over 28?
Columns: ['TV Station (Operator)', '2005', '2006', '2007', '2008', '2009', '2010', '2011 1H']
Types: ['text', 'real', 'real', 'real', 'real', 'real', 'real', 'real']
Sample row: ['BBTV CH7', 28.0, 27.4, 27.7, 31.0, 28.0, 31.0, 31.7]
SQL:

assistant: SELECT MAX("2011 1H") FROM "Table" WHERE "2005" > 28.0;