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:
Kathleen Robertson
Table title:
Television
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Year </th><th colspan=1 rowspan=1 > Title </th><th colspan=1 rowspan=1 > Role </th><th colspan=1 rowspan=1 > Notes </th></tr>
<tr> <td colspan=1 rowspan=1 > 1986 </td><td colspan=1 rowspan=1 > The Campbells </td><td colspan=1 rowspan=1 > Dorothea Spencer </td><td colspan=1 rowspan=1 > Episode: "A Man of Means" </td></tr>
<tr> <td colspan=1 rowspan=1 > 1988 </td><td colspan=1 rowspan=1 > My Secret Identity </td><td colspan=1 rowspan=1 > Jennifer </td><td colspan=1 rowspan=1 > Episode: "Grounded" </td></tr>
<tr> <td colspan=1 rowspan=1 > 1990 </td><td colspan=1 rowspan=1 > C.B.C.'s Magic Hour </td><td colspan=1 rowspan=1 > Cynthia Bundy </td><td colspan=1 rowspan=1 > Episode: "The Prom" </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 1990–1993 </td><td class="highlighted"  colspan=1 rowspan=1 > Maniac Mansion </td><td class="highlighted"  colspan=1 rowspan=1 > Tina Edison </td><td colspan=1 rowspan=1 > Series regular, 65 episodes Nominated — Young Artist Award for Best Young Actress Co-starring in an Off-Primetime or Cable Series (1991–92) </td></tr>
<tr> <td colspan=1 rowspan=1 > 1993 </td><td colspan=1 rowspan=1 > The Hidden Room </td><td colspan=1 rowspan=1 > Anne Morrison </td><td colspan=1 rowspan=1 > Episode: "Passages" </td></tr>
<tr> <td colspan=1 rowspan=1 > 1994 </td><td colspan=1 rowspan=1 > Heaven Help Us </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Episode: "Upstairs, Upstairs" </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 1994–1997 </td><td class="highlighted"  colspan=1 rowspan=1 > Beverly Hills, 90210 </td><td class="highlighted"  colspan=1 rowspan=1 > Clare Arnold </td><td colspan=1 rowspan=1 > Series regular, 99 episodes </td></tr>
<tr> <td colspan=1 rowspan=1 > 1995 </td><td colspan=1 rowspan=1 > Burke's Law </td><td colspan=1 rowspan=1 > Tracy Bird </td><td colspan=1 rowspan=1 > Episode: "Who Killed the World's Greatest Chef?" </td></tr>
<tr> <td colspan=1 rowspan=1 > 2002 </td><td colspan=1 rowspan=1 > Girls Club </td><td colspan=1 rowspan=1 > Jeannie Falls </td><td colspan=1 rowspan=1 > Series regular, 9 episodes </td></tr>
<tr> <td colspan=1 rowspan=1 > 2005 </td><td colspan=1 rowspan=1 > Law & Order: Criminal Intent </td><td colspan=1 rowspan=1 > Darla Pearson </td><td colspan=1 rowspan=1 > Episode: "View from Up Here" </td></tr>
<tr> <td colspan=1 rowspan=1 > 2006 </td><td colspan=1 rowspan=1 > Medium </td><td colspan=1 rowspan=1 > Diana Marvin / Kathy </td><td colspan=1 rowspan=1 > Episode: "Ghost in the Machine" </td></tr>
<tr> <td colspan=1 rowspan=1 > 2006–2007 </td><td colspan=1 rowspan=1 > The Business </td><td colspan=1 rowspan=1 > Julia Sullivan </td><td colspan=1 rowspan=1 > Series regular, 12 episodes Nominated — Gemini Award for Best Ensemble Performance in a Comedy Series (2007) </td></tr>
<tr> <td colspan=1 rowspan=1 > 2007 </td><td colspan=1 rowspan=1 > Tin Man </td><td colspan=1 rowspan=1 > Azkadellia </td><td colspan=1 rowspan=1 > TV miniseries </td></tr>
<tr> <td colspan=1 rowspan=1 > 2009 </td><td colspan=1 rowspan=1 > Flashpoint </td><td colspan=1 rowspan=1 > Helen Mitchell </td><td colspan=1 rowspan=1 > Episode: "Custody" </td></tr>
<tr> <td colspan=1 rowspan=1 > 2010 </td><td colspan=1 rowspan=1 > CSI: Miami </td><td colspan=1 rowspan=1 > Kayla Pennington </td><td colspan=1 rowspan=1 > Episode: "Meltdown" </td></tr>
<tr> <td colspan=1 rowspan=1 > 2011 </td><td colspan=1 rowspan=1 > Rookie Blue </td><td colspan=1 rowspan=1 > Leslie Atkins </td><td colspan=1 rowspan=1 > Episode: "Best Laid Plans" </td></tr>
<tr> <td colspan=1 rowspan=1 > 2011–2012 </td><td colspan=1 rowspan=1 > Boss </td><td colspan=1 rowspan=1 > Kitty O'Neill </td><td colspan=1 rowspan=1 > Series regular, 18 episodes </td></tr>
<tr> <td colspan=1 rowspan=1 > 2013 </td><td colspan=1 rowspan=1 > Cracked </td><td colspan=1 rowspan=1 > Erin </td><td colspan=1 rowspan=1 > Episode: "White Knight" </td></tr>
<tr> <td colspan=1 rowspan=1 > 2014 </td><td colspan=1 rowspan=1 > Bates Motel </td><td colspan=1 rowspan=1 > Jodi Morgan </td><td colspan=1 rowspan=1 > Recurring role, 5 episodes </td></tr>
<tr> <td colspan=1 rowspan=1 > 2014–2016 </td><td colspan=1 rowspan=1 > Murder in the First </td><td colspan=1 rowspan=1 > Hildy Mulligan </td><td colspan=1 rowspan=1 > Series regular, 32 episodes Nominated – Golden Maple Award for Best Actress in a TV series broadcast in the U.S. (2015) </td></tr>
<tr> <td colspan=1 rowspan=1 > 2015 </td><td colspan=1 rowspan=1 > The Fixer </td><td colspan=1 rowspan=1 > Ellie </td><td colspan=1 rowspan=1 > TV miniseries </td></tr>
<tr> <td colspan=1 rowspan=1 > 2019 </td><td colspan=1 rowspan=1 > Northern Rescue </td><td colspan=1 rowspan=1 > Charlie Anders </td><td colspan=1 rowspan=1 > main role </td></tr>
</table>
Question:
What were Kathleen Roberton's two longest television roles?
Answer:
Kathleen Robertson's two longest roles were as Tina Edison in Maniac Mansion (1990–1993) and as Clare Arnold in Beverly Hills, 90210 (1994–1997), which she appeared in for 65 and 99 episodes, respectively.