A TSV file contains all data listed in columns, with each value separated from the next by a tab stop character. Each new line represents a new set of data.

For TSV files that include names with nicknames in quotes, make sure the fields in question are surrounded by single quotes, not double quotes.

Bad: 
John "Johnny"      Doe      San Diego      CA      27      M

Good: 
John 'Johnny'      Doe      San Diego      CA      27      M