SRR2174513

This is a high-depth, miRNA-targeted small-RNA library (labeled bulk RNA-seq, miRNA-Seq on a HiSeq 2500) for which essentially all quality signals were directly measured, giving a confident reading (evidence_strength=1, so this is not provisional). The verdict is a solid B: base-call quality is the clear strength — 93.2% of bases at Q30 and a mean base quality of 36.7 mean the reads themselves are clean and reliably called, with zero adapter contamination and negligible N content, so trimming and mapping should be unproblematic. The one metric dragging the grade down is a 91.24% duplication rate, which scored 0; for most assays that would scream PCR/optical over-amplification, but for a small-RNA/miRNA library it is partly expected because the transcriptome is low-complexity (a small number of highly abundant mature miRNAs sequenced deeply at 51 bp). Practically, reuse the data with that caveat in mind: the per-base quality is trustworthy, but treat raw read counts cautiously and rely on UMI-style or post-collapse deduplication for any quantitative miRNA-abundance analysis, since the extreme duplication limits confidence in true molecular complexity.