Total reads: total reads from FASTQ files.

Valid reads: reads passed filtering(mininum base quality>=10, mismatch base pair<=1).

Median read counts for barcode: Median read counts for all barcodes.

Barcodes Q30: percent of barcode base pairs with quality scores over Q30, Q30 barcode counts / all read counts.

UMIs Q30: percent of UMI base pairs with quality scores over Q30, Q30 UMI counts / all read counts.