But i question the decision where first field (called "Reference" on test vector) may contain multiple types of data. If i'm going to use Excel, i'd rather see additional field which tell type of the data so i could filter/sort it with less effort.
That's what I've been also thinking: without more info that "one field that can contain anything" can become overly confusing.
Then I've seen he uses/proposes different formatting for different types of data.
But.. why not different field for each of those types??
Then something more: I've learned that best is that a file contains - in a way or another - the version of the protocol/documentation, to allow in the future, if anything is changed/added, still handle everything correctly or know from start it's not a supported version. Of course, then the use-in-excel may no longer work. On the other hand, I would suggest enforcing (or "strongly suggesting") the use of a password when exporting those files, for the sake of one's privacy...