SQL & PL/SQL :: Extracting Values Acquired Via UTL_TCP?

Using UTL_TCP package (for the first time; maybe there's smarter way to do that), I captured contents of a certain web page. The page contains (along with some text, images, etc.), a list of values I'd like to extract. Something like this:

PRVI miravira pond 23.7.2010 102,2221
NEKI miravira pond 23.7.2010 105,0996
DRUGI miravira pond 22.7.2010 101,3789

The result (output) of the PL/SQL procedure contains several hundreds of lines. I narrowed the output to a part which I'm interested in. It looks like this (a screenshot, because [code] or [pre] tags won't allow me to paint text, while the others don't preserve formatting):

Red values are what I'm looking for. The first one represents a date (July 23rd 2010), and the second one is amount (105,0996).

Now, what's the problem: the above mess doesn't look the same every day (probably because the rest of data that appears on a web page changes too). Therefore, SUBSTR (with hard-coded positions) that seems to be working today is wrong tomorrow. Moreover, IF condition I used might not provide desired part of a web page every time.

Here's the code (modified a little bit, unimportant for what matters):

declare
c utl_tcp.connection;
n number;
buffer varchar2(255);
l_x_dat varchar2(10);
l_x_izn varchar2(10);

[code].....

L_X_DAT and L_X_IZN are values I need. SUBSTR parameters, as I said, are far from being good.Is there any smart way to extract those two values? What (Oracle) technology could be used here? Or should I just try to, somehow, set SUBSTR values correctly (dynamically)?

If there was a way to uniquely fetch those values (instead of getting the whole web page and digging for what I'm interested in), it would be extraordinary.