PJ2, thank you for the response.
I know this is a bit off topic, but thought I'd ask anyway. Does anyone happen to know what the F/O meant when he asked in reference to ozone "What’s that is it specific to FIT?” at time 2 h 09 min 01? What is "FIT"? I have never come across this acronym before, or maybe it is something so obvious that I am not seeing it?