Table 3.

Observed yield and background yields extracted from the background-only fit together with post-fit uncertainties, in the two purity categories

Category	HPHP	HPLP
$\text{W}$ +jets	$100\pm 11$	$4600\pm 200$
$\text{Z}$ +jets	$33\pm 4$	$1580\pm 160$
QCD multijets	$650\pm 4$	$51100\pm 300$
Predicted total background	$783\pm 12$	$57200\pm 400$
Observed yield	$780\pm 30$	$57230\pm 240$