ID sample_no medium PSG_conc CellulaseActivity 1 N1 norm 0 4.144174926 2 N2 norm 0 5.003316814 3 N3 norm 0 5.842809946 4 N4 norm 0 3.919196661 5 N1 norm 1 3.168122935 6 N2 norm 1 4.331329334 7 N3 norm 1 5.357485655 8 N4 norm 1 3.355768562 9 N1 norm 10 1.790253869 10 N2 norm 10 2.522170057 11 N3 norm 10 3.388189011 12 N4 norm 10 1.624713093