Here are the 4000 Hz responses, also normal.  There is again a correction factor between the lowest level at which a response was obtained, and estimated hearing threshold, and different groups would put that at 5-10 dB for the high frequencies.  So, a present response at 20 indicates hearing is likely about 10 dB HL or better (note, this is not a response threshold, the audiologist didn’t find the lowest level eliciting a response because it wasn’t needed. There is no concern for hearing loss.)