user: ### NOW ANSWER:
Question: What is the rank of Rmax Rpeak ( Pflops ) of 17.173 20.133?
Columns: ['Rank', 'Rmax Rpeak ( Pflops )', 'Name', 'Vendor', 'Operating system']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1.0, '33.863 54.902', 'Tianhe-2', 'NUDT', 'Linux ( Kylin )']
SQL:

assistant: SELECT AVG("Rank") FROM "Table" WHERE "Rmax Rpeak ( Pflops )" = '17.173 20.133';