user: Question: what is the c (nf/km) when the l (mh/km) is 0.6099?
Columns: ['Frequency (Hz)', 'R (Ω/km)', 'L (mH/km)', 'G (μS/km)', 'C (nF/km)']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['1', '172.24', '0.6129', '0.000', '51.57']
SQL:

assistant: SELECT "C (nF/km)" FROM "Table" WHERE "L (mH/km)" = '0.6099';