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 Lakes Intercollegiate Athletic Conference
Table title:
Former members
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Institution </th><th colspan=1 rowspan=1 > Location </th><th colspan=1 rowspan=1 > Founded </th><th colspan=1 rowspan=1 > Nickname </th><th colspan=1 rowspan=1 > Joined </th><th colspan=1 rowspan=1 > Left </th><th colspan=1 rowspan=1 > Current Conference </th></tr>
<tr> <th colspan=1 rowspan=1 > University of Findlay </th><td colspan=1 rowspan=1 > Findlay, Ohio </td><td colspan=1 rowspan=1 > 1882 </td><td colspan=1 rowspan=1 > Oilers </td><td colspan=1 rowspan=1 > 1997 </td><td colspan=1 rowspan=1 > 2017 </td><td colspan=1 rowspan=1 > Great Midwest </td></tr>
<tr> <th class="highlighted"  colspan=1 rowspan=1 > Gannon University </th><td colspan=1 rowspan=1 > Erie, Pennsylvania </td><td colspan=1 rowspan=1 > 1925 </td><td colspan=1 rowspan=1 > Golden Knights </td><td colspan=1 rowspan=1 > 1995 </td><td class="highlighted"  colspan=1 rowspan=1 > 2008 </td><td class="highlighted"  colspan=1 rowspan=1 > Pennsylvania State </td></tr>
<tr> <th colspan=1 rowspan=1 > Hillsdale College </th><td colspan=1 rowspan=1 > Hillsdale, Michigan </td><td colspan=1 rowspan=1 > 1844 </td><td colspan=1 rowspan=1 > Chargers </td><td colspan=1 rowspan=1 > 1975 </td><td colspan=1 rowspan=1 > 2017 </td><td colspan=1 rowspan=1 > Great Midwest </td></tr>
<tr> <th colspan=1 rowspan=1 > Lake Erie College </th><td colspan=1 rowspan=1 > Painesville, Ohio </td><td colspan=1 rowspan=1 > 1856 </td><td colspan=1 rowspan=1 > Storm </td><td colspan=1 rowspan=1 > 2010 </td><td colspan=1 rowspan=1 > 2017 </td><td colspan=1 rowspan=1 > Great Midwest </td></tr>
<tr> <th colspan=1 rowspan=1 > Malone University </th><td colspan=1 rowspan=1 > Canton, Ohio </td><td colspan=1 rowspan=1 > 1892 </td><td colspan=1 rowspan=1 > Pioneers </td><td colspan=1 rowspan=1 > 2012 </td><td colspan=1 rowspan=1 > 2016 </td><td colspan=1 rowspan=1 > Great Midwest </td></tr>
<tr> <th class="highlighted"  colspan=1 rowspan=1 > Mercyhurst University </th><td colspan=1 rowspan=1 > Erie, Pennsylvania </td><td colspan=1 rowspan=1 > 1926 </td><td colspan=1 rowspan=1 > Lakers </td><td colspan=1 rowspan=1 > 1995 </td><td class="highlighted"  colspan=1 rowspan=1 > 2008 </td><td class="highlighted"  colspan=1 rowspan=1 > Pennsylvania State </td></tr>
<tr> <th colspan=1 rowspan=1 > Oakland University </th><td colspan=1 rowspan=1 > Rochester, Michigan </td><td colspan=1 rowspan=1 > 1957 </td><td colspan=1 rowspan=1 > Golden Grizzlies </td><td colspan=1 rowspan=1 > 1974 </td><td colspan=1 rowspan=1 > 1997 </td><td colspan=1 rowspan=1 > Horizon (NCAA D-I) </td></tr>
<tr> <th colspan=1 rowspan=1 > Ohio Dominican University </th><td colspan=1 rowspan=1 > Columbus, Ohio </td><td colspan=1 rowspan=1 > 1911 </td><td colspan=1 rowspan=1 > Panthers </td><td colspan=1 rowspan=1 > 2010 </td><td colspan=1 rowspan=1 > 2017 </td><td colspan=1 rowspan=1 > Great Midwest </td></tr>
<tr> <th colspan=1 rowspan=1 > Tiffin University </th><td colspan=1 rowspan=1 > Tiffin, Ohio </td><td colspan=1 rowspan=1 > 1888 </td><td colspan=1 rowspan=1 > Dragons </td><td colspan=1 rowspan=1 > 2008 </td><td colspan=1 rowspan=1 > 2018 </td><td colspan=1 rowspan=1 > Great Midwest </td></tr>
<tr> <th colspan=1 rowspan=1 > Walsh University </th><td colspan=1 rowspan=1 > North Canton, Ohio </td><td colspan=1 rowspan=1 > 1960 </td><td colspan=1 rowspan=1 > Cavaliers </td><td colspan=1 rowspan=1 > 2012 </td><td colspan=1 rowspan=1 > 2017 </td><td colspan=1 rowspan=1 > Great Midwest </td></tr>
<tr> <th colspan=1 rowspan=1 > Westminster College </th><td colspan=1 rowspan=1 > New Wilmington, Pennsylvania </td><td colspan=1 rowspan=1 > 1852 </td><td colspan=1 rowspan=1 > Titans </td><td colspan=1 rowspan=1 > 1997 </td><td colspan=1 rowspan=1 > 2000 </td><td colspan=1 rowspan=1 > Presidents (NCAA D-III) </td></tr>
</table>
Question:
For which conference did the Gannon University and Mercyhurst College leave for the Great Lakes Intercollegiate Athletic Conference?
Answer:
Gannon University and Mercyhurst College left the GLIAC for the Pennsylvania State Athletic Conference in 2008.