The first column of widgets show (and control) the cursor position in voxels.
The second column of widgets show (and control) the cursor position in mm. If an origin (or relevant sform/qform setting) has been set in the image header, this will be reflected in these values.
Volume shows and controls the current volume (e.g., timepoint) in a 4D dataset.
Intensity shows the value in the voxel at the current cursor position.