And that is precisely why the ACX Robot tests for noise and peak distortion and overall volume. It doesn’t count if you have a terrific noise floor, but your show has to be boosted 15dB to be heard.
That’s also a good place for the ACX Check tool instead of Contrast. It gives you all three numbers in one swat.
http://wiki.audacityteam.org/wiki/Nyquist_Analyze_Plug-ins#ACX_Check
Also:
https://forum.audacityteam.org/t/measure-between-23db-and-18db-rms/32770/16
Koz