Table 1. Assembly statistics for UMD2 and UMD3.

Measure	UMD2	UMD3
Total sequence	2.850 Gbp	2.649 Gbp
In chromosomes (placed)	2.610 Gbp (91%)	2.640 Gbp (99%)
Unplaced	240 Mbp	9 Mbp
Number of contigs	75,775	70,770
Contig N50	88,288 bp	103,785 bp
Number of scaffolds	134,667	39,978
Scaffold N50	7.9 Mp	8.2 Mbp
Number of gaps	59,983	50,156
Gap N50	60,968 bp	34,758 bp

The N50 statistic is the minimum length of a feature (contig, scaffold, gap) such that using equal or longer features produces half of the bases of the genome-wide total.