Hi Jack,
From the left, the first numbers are the size of the image open in the PC window in pixels. This is shown by default.
The percentage is the zoom ratio of the image displayed on the PC window. This is shown by default.
The two figures in brackets are the x and y coordinates of the cursor on the image. This is displayed if the Maxim Information window is open. To open go to View/Information window.
The last figure is the value of the pixel under the cursor. This is only shown if the Maxim Information window is open.
Hope that helps.
Peter