code: def guess_min_peek_range(tubes)
        min = 0
        tubes.each do |tube|
          response = tube.peek('ready')
          if response
            if min == 0
              min = response.id.to_i
            else
              min = [min, response.id.to_i].min
            end
          end
        end
        # Add some jitter in the opposite direction of 1/4 range
        jitter_min = (min-(GUESS_PEEK_RANGE*0.25)).to_i
        [1, jitter_min].max
      end
docs: Pick a Minimum Peek Range Based on minumum ready jobs on all tubes