thresh P-value %words %seq Nwords Nseq total_words total_seq 8.891 1.0e-05 20.0% 18.8% 6 6 30 32 7.7579 5.0e-05 43.3% 40.6% 13 13 30 32 7.2057 0.0001 53.3% 50.0% 16 16 30 32 5.7497 0.0005 63.3% 59.4% 19 19 30 32 5.0338 0.001 83.3% 78.1% 25 25 30 32