Matthew Stafford has the most pass attempts by a quarterback at home in a season, with 392 attempts in 2012.

highest+passer+rating+by+a+player+in+a+season+at+home+,+minimum+125+pass+++ attempts
Interpreted as:
highest+passer+rating+by+a+player+in+a+season+at+home+,+minimum+125+pass+++ passing attempts

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