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. 2002 Jan;12(1):177–189. doi: 10.1101/gr.208902

Table 3.

Characterization of Supercontigs

Genome H. influenzae S. cerevisiae D. melanogaster Human 21 Human 22






Full Coverage (∼10-fold)
 # of supercontigs 3 19 65 38 71
 Mean length (kb) 603 6511 1811 877 461
 N50 length (kb) 1192 1177 5143 3986 3011
Half Coverage (∼5-fold)
 # of supercontigs 10 51 450 168 206
 Mean length (kb) 178 219 254 192 150
 N50 length (kb) 629 1732 4258 3278 3197

The lengths include only the known bases actually contained in the assembly and thus exclude the length contained in the gaps (which typically comprise an additional 3–5%). The N50 length is the length L such that 50% of the bases are contained in supercontigs of size at least L.