anecdotally

/AE0 N AH0 K D OW1 T AH0 L IY0/
adverb
  1. 1

    In an anecdotal manner; by means of a recounted incident.

    โ€œAs it was an informal hearing, the evidence was presented anecdotally.โ€

Source: https://en.wiktionary.org/wiki/anecdotally