thresh P-value %words %seq Nwords Nseq total_words total_seq 7.7656 5.0e-05 33.3% 30.0% 15 15 45 50 7.029 0.0001 46.7% 42.0% 21 21 45 50 5.8515 0.0005 62.2% 56.0% 28 28 45 50 5.0024 0.001 82.2% 74.0% 37 37 45 50