Table 1. Total number of pyrosequencing sequences after quality control and chimera screening.

Samples	Prestwick								LH	Totals
Sample	1	2	3	4	5	6	7	8	1
QC tag reads	27,206	23,877	21,042	19,031	49,476	39,054	35,794	54,227	35,995	305,702
Chimera check reads	13,758	14,774	13,534	12,856	42,741	23,932	29,641	40,234	25,751	217,221

Data are shown for reads passing the initial quality trimming, tag matching and size culling steps (QC tag reads) and reads underpinning OCTUs that were estimated to be non-chimeric (Chimera check reads) from the Prestwick and Littlehampton (LH) sample sites.