Please read the following table in HTML format from a webpage and then answer the question in detail according to the table. Each table cell is defined by a <td> and a </td> tag. Each table row starts with a <tr> and ends with a </tr> tag. 'rowspan=m' and 'colspan=n' represents a cell spaning over 'm' rows and 'n' columns.

Webpage title:
1977 Old Dominion 500
Table title:
Standings after the race
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Pos </th><th colspan=1 rowspan=1 > Driver </th><th colspan=1 rowspan=1 > Points </th><th colspan=1 rowspan=1 > Differential </th></tr>
<tr> <th colspan=1 rowspan=1 > - </th><td class="highlighted"  colspan=1 rowspan=1 > Cale Yarborough </td><td colspan=1 rowspan=1 > 4155 </td><td colspan=1 rowspan=1 > 0 </td></tr>
<tr> <th colspan=1 rowspan=1 > - </th><td class="highlighted"  colspan=1 rowspan=1 > Richard Petty </td><td colspan=1 rowspan=1 > 3936 </td><td class="highlighted"  colspan=1 rowspan=1 > 219 </td></tr>
<tr> <th colspan=1 rowspan=1 > - </th><td colspan=1 rowspan=1 > Benny Parsons </td><td colspan=1 rowspan=1 > 3782 </td><td colspan=1 rowspan=1 > 373 </td></tr>
<tr> <th colspan=1 rowspan=1 > - </th><td colspan=1 rowspan=1 > Darrell Waltrip </td><td colspan=1 rowspan=1 > 3727 </td><td colspan=1 rowspan=1 > 428 </td></tr>
<tr> <th colspan=1 rowspan=1 > - </th><td colspan=1 rowspan=1 > Buddy Baker </td><td colspan=1 rowspan=1 > 3276 </td><td colspan=1 rowspan=1 > 879 </td></tr>
<tr> <th colspan=1 rowspan=1 > - </th><td colspan=1 rowspan=1 > Dick Brooks </td><td colspan=1 rowspan=1 > 3088 </td><td colspan=1 rowspan=1 > 1067 </td></tr>
<tr> <th colspan=1 rowspan=1 > 7 </th><td colspan=1 rowspan=1 > James Hylton </td><td colspan=1 rowspan=1 > 2876 </td><td colspan=1 rowspan=1 > 1279 </td></tr>
<tr> <th colspan=1 rowspan=1 > 8 </th><td colspan=1 rowspan=1 > Cecil Gordon </td><td colspan=1 rowspan=1 > 2860 </td><td colspan=1 rowspan=1 > 1295 </td></tr>
<tr> <th colspan=1 rowspan=1 > 9 </th><td colspan=1 rowspan=1 > Richard Childress </td><td colspan=1 rowspan=1 > 2855 </td><td colspan=1 rowspan=1 > 1300 </td></tr>
<tr> <th colspan=1 rowspan=1 > - </th><td colspan=1 rowspan=1 > Bobby Allison </td><td colspan=1 rowspan=1 > 2873 </td><td colspan=1 rowspan=1 > 1372 </td></tr>
</table>
Question:
By how many points was Cale Yarborough ahead of Richard Petty in the 1977 Old Dominion 500 standings?
Answer:
Cale Yarborough was 219 points ahead of Richard Petty in the 1977 Old Dominion 500 standings.