Cell Selection with Python


I trying to select cells by python. I manually selected cells with the selection tools, ‘select cells on (s)’:

When I traced the python script, it was shown as:

SelectSurfaceCells(Rectangle=[675, 749, 1356, 1196], Modifier=None)

My questions is:
What does 675, 749, 1356, 1196 stand for?
These are neither cell IDs nor point coordinates.

Please help.

(selection Module — ParaView/Python 5.10.0 documentation):

Rectangle - list containing bottom left (x1, y1) and top right (x2, y2) corner of a rectangle defining the selection region in the format [x1, y1, x2, y2]. Defined in pixels