Summary table at top of reports should show the estimated duplex per cell.
This should just be a report formatting thing. Also clarify what the number means - ie the percentage of raw reads which are duplex. Maybe also provide the percentage of combined reads which will be duplex too? ie.
If frac_raw_reads_duplex = 0.16, then
frac_combined_reads_duplex = (0.16 / 2) / (1.0 - (0.16/2))
= 0.08 / 0.92
= 0.087
Is that helpful or just confusing?