Octals 302 240 together seem to correspond to non-breaking space

By looking at a particular line of a text file (say, the 1123th, see below), it seems that there is a non-breaking space, but I am not sure:

$ cat myfile.csv | sed -n 1123p | cut -f2
Lisztes feher

$ cat myfile.csv | sed -n 1123p | cut -f2 | od -An -c -b
   L   i   s   z   t   e   s 302 240   f   e   h   e   r  \n
 114 151 163 172 164 145 163 302 240 146 145 150 145 162 012

However, the ASCII code in octal indicates that a non-breaking space is 240. So what does the 302 correspond to? Is it something particular to this given file?

I am asking the question in order to understand. I already know how to use sed to fix my problem, following this answer:

$ cat myfile.csv | sed -n 1123p | cut -f2 | sed 's/\xC2\xA0/ /g' | od -An -c -b
   L   i   s   z   t   e   s       f   e   h   e   r  \n
 114 151 163 172 164 145 163 040 146 145 150 145 162 012

For information, the original file is in the .xlsx (Excel) format. As my computer runs Xubuntu, I opened it with LibreOffice Calc (v5.1). Then, I saved it as "Text CSV" with "Character set = Unicode (UTF-8)" and tab as field separator:

$ file myfile.csv
myfile.csv: UTF-8 Unicode text