Tube Conductance Test Results, What do they mean?

[JumpMarine]

I just picked up for $10 (4) 12at7's They were advertised as all testing good. Listed were these results: Tested with a B&K Dynamic Mutual Conductance Tube Tester, if that means anything at all....

Telefunken 80/80
RCA 75/81
Sylvania 86/76
No Name 90/80

What do these mean? And did I get them for a good price?

 

[JumpMarine]

Re: Tube Conductance Test Results, What do they mean?

Bump....

 

[Curly]

Re: Tube Conductance Test Results, What do they mean?

Transconductance

 

[JumpMarine]

Re: Tube Conductance Test Results, What do they mean?

Transconductance

Thanks Gary, that is an incredible amount of data access. As far as the health of the individual tubes, what do those results tell me?