Questions about tube test numbers

[t44e6]

Some time ago I acquired a lot of 16 Bendix 6C51 / 5670 / 396A tubes. They had been tested by a professional service and each one has a data sheet which unless I am mistaken shows the percentage compared to the expected values of a new tube. I have VERY LITTLE knowledge or experience on the subject. I am hoping I can get some assistance in deciphering these readings so I can determine which tubes are best to use in pairs and which may be good candidates to get rid of. The readings are iP , Gm, gas, and a noise reading. I am going to assume that lower gas and noise is good. The highest rating for gas is .2 with most being .1 or 0. All of the noise ratings are in the middle of the scale which goes from very low to low to microphonic. Here are the numbers iP/Gm respectively:

46/53-69/82
43/53-72/76
58/43-83/76
58/58-87/85
56/56-79/83
124/82-130-99 with what looks like 933µA/0 leakage (.933?)
85/75-101/94
65/54-92/83
46/75-76/99
80/68-98/94 1µA/o leakage
74/71-94/94
73/75-98/94
63/75-90/98
63/56-87/80
117/112-112/105
97/95-112/112

Thanks for any information and knowledge you can share with a noob.

I was gifted a low end Little Bear P7 recently, and I have a pair of Beyerdynamic DT770 Pro 250Ω phones.
I am temporarily using a Behringer UCA202 between a PC and the amp. There is some background noise which I have yet to try to track down. I plan on getting a clean power supply and look into the best way to get an analog signal to the amp form a PC. At least for now an analog source is not practical or really even possible.
Currently I am running one of a matched pair of Bendix slotted column 6080WBs and 2 GE 6C51s. I also have a TungSol 5998 and a Thomson / CSF 6080WB which sounds flat.

Again, thanks in advance for any help!

 

[Monsterzero]

Try calling Andy.He knows his stuff and is willing to share his knowledge.

http://vintagetubeservices.com/contact-andy/

 

[t44e6]

I spoke with Andy at VTS, and he said that he couldn't tell me very much based on the info as these are percentages of readings based on a scale as opposed to the actual readings. He also told me that he has no procedures developed for testing noise and microphonics for these tubes. I am going to follow his advice and just find the ones with the closest and highest numbers and listen to them.