Shell Programming and Scripting

tail -200 /home/log.txt | grep -A6 'Header' | grep -v 'Header'

 
Some numbers and characters 1 = 5.09093e-03 C
Some numbers and characters 2 = 6.09030e-03 C
Some numbers and characters 3 = 4.48998e-03 C
Some numbers and characters 4 = 4.55334e-03 C
Some numbers and characters 5 = 7.38398e-02 C

#If your set supports -A option
set -A arr $(tail -200 /home/log.txt | grep -A6 'Header' | grep -v 'Header' | awk '{printf $(NF-1)" "}')
 
#if not, try this...
i=0
for val in $(tail -200 /home/log.txt | grep -A6 'Header' | grep -v 'Header' | awk '{printf $(NF-1)" "}')
do
  arr[$i]=$val
  ((i=i+1))
done

echo ${arr[0]}
echo ${arr[1]}
...