user: ### NOW ANSWER:
Question: What higher harmonics have an NOAA of 8?
Columns: ['Higher harmonics', 'Darwin', 'Period', 'Speed', 'Doodson coefficients', 'NOAA']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Species', 'Symbol', '(hr)', 'rate(°/hr)', 'n 1 (L)', 'order']
SQL:

assistant: SELECT "Higher harmonics" FROM "Table" WHERE "NOAA" = '8';