Width		Height	WSI resolution	level
≥25,000	and	≥50,000	$171\times 391$ pixels	8
≥12,500	or	≥25,000	$391\times 782$ pixels	7
≥6250	or	≥12,500	$782\times 1563$ pixels	6
≥3125	or	≥6250	$1563\times 3125$ pixels	5
≥1563	or	≥3125	$3125\times 6250$ pixels	4
≥782	or	≥1563	$6250\times$ 12,500 pixels	3
≥391	or	≥782	12,500 × 25,000 pixels	2
≥171	or	≥391	25,000 × 50,000 pixels	1
<171	and	<391	50,000 × 100,000 pixels	0