Table 1.

Summary report for the assembly quality assessment using MetaQuast.

Statistics	1640	1751	1957
Number of scaffolds (>= 0 bp)	3,631,380	4,047,900	3,138,527
Number of scaffolds (>= 500 bp)	1,488,437	1,609,020	1,578,887
Number of scaffolds (>= 1000 bp)	326,980	333,885	447,418
Number of scaffolds (>= 25,000 bp)	172	195	1551
Number of scaffolds (>= 50,000 bp)	12	40	499
Total length (>= 0 bp)	2,320,437,372	2,460,323,814	2,396,069,091
Total length (>= 500 bp)	1,385,386,471	1,404,094,641	1,717,252,425
Total length (>= 1000 bp)	631,179,105	570,404,360	964,085,094
Total length (>= 25,000 bp)	5,697,241	8,152,100	8,236,5310
Total length (>= 50,000 bp)	686,375	2,983,958	46,419,897
N50	914	850	700
L50	391,387	477,193	348,604

N50—length such that scaffolds of this length or longer include half the bases of the assembly; L50—number of scaffolds that are longer than, or equal to, the N50 length and therefore include half the bases of the assembly (https://www.ncbi.nlm.nih.gov/assembly/help/#globalstats).