Hello everyone! I'm a little bit confused with fastq quality score. I've got fastq with reads like this:
@EAS18:1:1:2:1642:1830:0/2 TGTCCCATCTCATGCTCAAGCAGCAGACGAAC + a`_^a_^a_aa^aa`a_`_a[[a^_aU__W^^Xa````^_`RER
What is phred quality score for first nucleotide? It's "a", but there is no small "a" in The Table:
All that I know is that this score must be less or equal than 40.