It shouldn't clip the data - not sure why that would be happening. There is no equivalent of ADE XL's "reevaluate" option in IC5141. So all you can do is build a calculator function which computes a scalar for each iteration, and then use stddev, average, or histogram() on the results ot process it.
In your case you ought to be able to do:
stddev(average(clip(IT("/V0/PLUS") 50m 100m))
average(average(clip(IT("/V0/PLUS") 50m 100m))