my $text=<<END;
<TR>
<TD nowrap>4.2</TD> 
<TD nowrap>-1.2</TD> 
<TD nowrap>3.5</TD> 
<TD nowrap>6.2</TD> 
<TD nowrap>5</TD> 
<TD nowrap>2e-8</TD> 
<TD nowrap>1.3</TD> 
<TD nowrap>12.0</TD> 
<TD nowrap>text</TD> 
<TD nowrap>other</TD> 
<TD nowrap>-23</TD> 
<TD nowrap>2.3</TD> 
<TD nowrap>0.2</TD> 
<TD nowrap>1.4</TD> 
<TD nowrap>4</TD> 
<TD nowrap>6</TD> 
<TD nowrap>03</TD> 
<TD nowrap>2.3</TD>
<TD nowrap>e12</TD> 
<TD nowrap>4</TD>
<TR>
END
# want to get the number 0.2 which is in the 13th column