user: Question: Name the lowest ERP W with a frequency mhz less than 103.1
Columns: ['Call sign', 'Frequency MHz', 'City of license', 'ERP W', 'Class', 'FCC info']
Types: ['text', 'real', 'text', 'real', 'text', 'text']
Sample row: ['K276DL', 103.1, 'Hemingford, Nebraska', 80.0, 'D', 'FCC']
SQL:

assistant: SELECT MIN("ERP W") FROM "Table" WHERE "Frequency MHz" < 103.1;