human
Considering the provided database schema and associated query, produce SQL code to retrieve the answer to the query. 
###Database Schema: TV Station (Operator), 2005, 2006, 2007, 2008, 2009, 2010, 2011 1H
###Question: What is the highest 2011 1H value for a 2005 over 28?
gpt
SELECT MAX 2011 1H FROM table WHERE 2005 > 28