+ clitkImageStatistics -i ${vector_file} -m ${roi_mask2} -c $i --verbose 2> /dev/null | tail -n 8 | head -n 6 > /tmp/res.txt
+ min=`tail -n 2 /tmp/res.txt | head -n 1 | cut -f 2 -d ':'`
+ max=`tail -n 1 /tmp/res.txt | cut -f 2 -d ':'`
+ amp=`echo $max-$min | bc`
+ cat /tmp/res.txt
+ echo "Amplitude: $amp"