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:
Great Northern Y-1
Table title:
Fleet roster
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > ALCO serial </th><th colspan=1 rowspan=1 > GE serial </th><th colspan=1 rowspan=1 > Build date </th><th colspan=1 rowspan=1 > GN No. </th><th colspan=1 rowspan=1 > PRR No. </th><th colspan=1 rowspan=1 > Scrap date </th></tr>
<tr> <td colspan=1 rowspan=1 > 67022 </td><td colspan=1 rowspan=1 > 10160 </td><td colspan=1 rowspan=1 > August 1927 </td><td class="highlighted"  colspan=1 rowspan=1 > 5010 </td><td colspan=1 rowspan=1 > 1 </td><td colspan=1 rowspan=1 > 1966 </td></tr>
<tr> <td colspan=1 rowspan=1 > 67023 </td><td colspan=1 rowspan=1 > 10161 </td><td colspan=1 rowspan=1 > September 1927 </td><td class="highlighted"  colspan=1 rowspan=1 > 5011 </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > 1957 </td></tr>
<tr> <td colspan=1 rowspan=1 > 67542 </td><td colspan=1 rowspan=1 > 10537 </td><td colspan=1 rowspan=1 > September 1928 </td><td class="highlighted"  colspan=1 rowspan=1 > 5012 </td><td colspan=1 rowspan=1 > 2 </td><td colspan=1 rowspan=1 > 1962 </td></tr>
<tr> <td colspan=1 rowspan=1 > 67543 </td><td colspan=1 rowspan=1 > 10538 </td><td colspan=1 rowspan=1 > July 1928 </td><td class="highlighted"  colspan=1 rowspan=1 > 5013 </td><td colspan=1 rowspan=1 > 3 </td><td colspan=1 rowspan=1 > 1966 </td></tr>
<tr> <td colspan=1 rowspan=1 > 68272 </td><td colspan=1 rowspan=1 > 11149 </td><td colspan=1 rowspan=1 > August 1930 </td><td class="highlighted"  colspan=1 rowspan=1 > 5014 </td><td colspan=1 rowspan=1 > 4 </td><td colspan=1 rowspan=1 > 1960 </td></tr>
<tr> <td colspan=1 rowspan=1 > 68273 </td><td colspan=1 rowspan=1 > 11150 </td><td colspan=1 rowspan=1 > August 1930 </td><td class="highlighted"  colspan=1 rowspan=1 > 5015 </td><td colspan=1 rowspan=1 > 5 </td><td colspan=1 rowspan=1 > 1966 </td></tr>
<tr> <td colspan=1 rowspan=1 > 68274 </td><td colspan=1 rowspan=1 > 11151 </td><td colspan=1 rowspan=1 > August 1930 </td><td class="highlighted"  colspan=1 rowspan=1 > 5016 </td><td colspan=1 rowspan=1 > 6 </td><td colspan=1 rowspan=1 > 1966 </td></tr>
<tr> <td colspan=1 rowspan=1 > 68275 </td><td colspan=1 rowspan=1 > 11152 </td><td colspan=1 rowspan=1 > August 1930 </td><td class="highlighted"  colspan=1 rowspan=1 > 5017 </td><td colspan=1 rowspan=1 > 7 </td><td colspan=1 rowspan=1 > 1966 </td></tr>
</table>
Question:
What GN numbers were assigned to Y-1 units?
Answer:
GN numbers 5010–5017 are classified as Y-1 locomotives.