ERR409900

This is bulk human RNA-seq from an Illumina HiSeq 2000, and it earned a solid B (83/100): the per-base quality is excellent, with mean base quality of 37.9 and 96.7% of bases at Q30, alongside zero adapter contamination, so the raw sequence itself is clean and reliable for expression analysis. The single factor dragging the grade down is an 85% duplication rate, which scored 0 on its metric — though for high-depth RNA-seq a large fraction of duplicates is expected from highly expressed transcripts rather than purely a library-complexity defect, so judge it against your application (it matters more if you intend to deduplicate or call variants than for standard differential-expression work). One caveat for reuse is the short 51 bp single-end-length reads, which limit confident multi-mapping resolution and splice-junction detection. Note that the core quality metrics here are genuinely measured rather than extrapolated, so this reading is reasonably firm rather than provisional, though the headline read/base counts are reported rather than independently verified.