What do these compression #s mean?

[Nathan Belo <belo@eskimo.com>]

My car is burning oil.  Very embarassing for someone who props Audis as
great cars.  When I start off and shift...poof!  Blue cloud when I shift
and sometimes a cloud when I'm stopped at the light.  Borrowed my friends
Snap-On compression tester and got this:

Dry test:

Cylinders
 1       2       3       4       5 
155     125     128     143     60

2 squirts of oil in each cylinder

 1       2       3       4       5
165     127     200     170     90

What the !@#$% is going on with cylinder 5?  Do I need a top and bottom
rebuild?  Or do I have a bad valve at 5?  Ring job?  Is it better to just
buy an engine from a junk yard and drop it in or rebuild?  Say it's just a
bad valve!!

'88 90Q  173k+ miles,  smokin' whoever is driving behind me--literally
Nathan Belo
206.399.3337

"To see a thing uncolored by one's own personal preferences and desires is
to see it in its own pristine simplicity."  Bruce Lee--Tao of Jeet Kune Do