Showcontig output not changing after a re-index

Can someone explain exactly what the output of Showcontig is showing me?

I came across this in an old script, ran it against a table (client) and got the following:

DBCC SHOWCONTIG scanning 'Client' table...

Table: 'Client' (245575913); index ID: 1, database ID: 5

TABLE level scan performed.

- Pages Scanned................................: 2

- Extents Scanned..............................: 2

- Extent Switches..............................: 1

- Avg. Pages per Extent........................: 1.0

- Scan Density [Best Count:Actual Count].......: 50.00% [1:2]

- Logical Scan Fragmentation ..................: 50.00%

- Extent Scan Fragmentation ...................: 50.00%

- Avg. Bytes Free per Page.....................: 3691.0

- Avg. Page Density (full).....................: 54.40%

DBCC execution completed. If DBCC printed error messages, contact your system administrator.

I took this to mean the table has 50% index fragmentation, so run the following (in order) all of which had no effect on the showcontig output:

DBCC INDEXDEFRAG ('TestDatabase','client')
DBCC INDEXDEFRAG ('TestDatabase','client', 'PK_Client')
DBCC INDEXDEFRAG ('TestDatabase','client', 'IX_ClientName')

ALTER INDEX IX_ClientName ON client REORGANIZE;

ALTER INDEX IX_ClientName ON client REBUILD;

--And finally:
DROP INDEX  IX_ClientName ON client;
CREATE INDEX IX_ClientName on client (Name)

But when I run 'ALTERINDEXPK_ClientONclientREBUILD;' the 'Extent Scan Fragmentation' fell to 0% but the 'Logical Scan Fragmentation' remained the same.

I have goggled 'showcontig' but am still obviously missing exactly what these values mean? Can anyone provide a link to a simple explanation?

‘Client’ has two Indexes ‘IX_ClientName;’ which is linked to the ‘Name’ column, as seen above; and ‘PK_Client,’ which is the primary key and linked to the ‘ID’ column.