Superead is 4 to 12 seconds a page.
Skittering is slower allow about 10 to 20 seconds per page. (page about 310 words)
A4 page is about 670 words and often 2 columns so you need to allow 4 to 12 seconds superreading or 10 to 20 second skittering each column. I hope I don't need to tell you that the time would be double if it is a single column on an A4 page.
Alex
