Understanding Bounding Box Dimensions in LlamaParse JSON Output

[MorDvash]

I am using LlamaParse to parse my PDFs, and when using the JSON mode, I receive a bounding box (bBox) as part of the output. My question is:

What do the x, y, h, and w values represent? How should they be interpreted? Are these measurements in pixels, percentages, or something else?

Thanks