I'm not talking about if you trust yourself
today.
I mean to say, do you trust yourself
last year?
Basically, do you trust the measurement that you did last year at this time (May, 17, 2020)? Are your notes comprehensive enough? Did you include any safeguards against incorrect measurements? Are you sure you did fixture compensation? Were you using an obscure cable, unsure about it's quality? Was averaging enabled or not?
Data is gold, but unlike gold, it tarnishes very quickly without delicate care.
What can you do today such that you will absolutely trust, understand, and be able to confidently use your data one year from now?