Fig. 1
From: Illumina error profiles: resolving fine-scale variation in metagenomic sequencing data
Comparison of error rates. The upper graphs indicate the proportion of substitutions of A, C, G and T for each data set, respectively. The two graphs in the middle show the proportion of inserted A, C, G and T nucleotides and the lower graphs show the proportion of deletions associated with each of the four nucleotides. Data sets are grouped by sequencing platform (solid lines) and library preparation method (dashed lines). Error rates are measured as errors per base