Fig. 3From: Optimized Illumina PCR-free library preparation for bacterial whole genome sequencing and analysis of factors influencing de novo assemblyImpact of average library insert size and genomic GC content on sequencing quality. Genomic GC content was plotted against the percentage of raw read pairs passing quality filtering (80;20). Then, libraries were grouped according to their category. Group 1 (red) comprises all standard libraries (TS). Group 2 (green) covers all libraries of category IS1. Group 3 (blue) represents the combined set of IS2 and IS3 librariesBack to article page