quick question about tax deed sales - not sure what these numbers mean?

[Corey Demuth]

I am looking at some listings for tax deed sales. here is what i see in one of them:

"
Judgement Date
09/17/2009

Order Issue Date
10/29/2009

Case Style
COUNTY, ET AL VS NAME, ET AL

Legal Desc.
LT 7 BLK 3 LIBERTY ROAD MANOR SEC 20 U/R

Physical Address
ADDRESS

Adjudged Value
$6,936

Estimated Minimum Bid
$6,936.00
"

What does the adjudged value mean? Why is it the same as the minimum bid? Some other listings have a minimum bid significantly below the adjudged value. What do these two numbers really mean? I saw one that had an adjudged value of 60k, with a minimum opening bid of only 1300!

Thanks for any advice.