A couple of comments. I'm assuming that you are declaring the variable $total_time on line 8. But you are not really using it to do anything besides make a copy of $all_minutes so: 
    $all_minutes = $total_hours + $total_minutes;
    $total_time = $total_time + $all_minutes;
    $total_time_hours += int($total_time / 60);

[download]

can be optimized like this: 
    $all_minutes = $total_hours + $total_minutes;
    $total_time_hours = int($all_minutes / 60);

[download]

also the lines 
   $row[0] = " " if($row[0] eq "");
   $row[1] = " " if($row[1] eq "");
   $row[2] = " " if($row[2] eq "");
   etc..

[download]

could be rewritten as: 
   foreach $item(@row){
      $item = " " if($item eq "");
   }

[download]

BTW: I'm not criticizing the way you code, just offering tips to help you with maintainence and readability. So please don't take offence.

In reply to Re: Time Totaling re-explained by thunders
in thread Time Totaling re-explained by nlafferty

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.