As shown on the below link:
on the picture with the 6 cells it has 1,199 cells which are good and then it also has 1,120 cells which are bad.
I suppose this is what happens when you play around with numbers. I guess they fell in their own trap trying to make the cells look better than what the real numbers indicate.
I guess their intention was to type 1,200 but by mistake the typed 1,120.
Please correct me if I am wrong...