no, you can change which cells are trimmed under constant throttle, not how much they're trimmed by.
OP, he means rows 3-15 in the fuel map, nothing to do with the sensor screen. whilst on that screen tho, what does the o2 voltage show at idle?
for it to be using that much extra fuel just from the tune he'd have to go through every cell and richen them all up and take out loads of timing under light load, which would just be silly but you never know...