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:
Myanmar National Airlines
Table title:
Fleet
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=2 > Aircraft </th><th colspan=1 rowspan=2 > In Service </th><th colspan=1 rowspan=2 > Orders </th><th colspan=4 rowspan=1 > Passengers </th><th colspan=1 rowspan=2 > Notes </th></tr>
<tr> <th colspan=1 rowspan=1 > C </th><th colspan=1 rowspan=1 > W </th><th colspan=1 rowspan=1 > Y </th><th colspan=1 rowspan=1 > Total </th></tr>
<tr> <td colspan=1 rowspan=1 > ATR 72-200 </td><td colspan=1 rowspan=1 > 1 </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > ATR 72-500 </td><td colspan=1 rowspan=1 > 3 </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > 70 </td><td colspan=1 rowspan=1 > 70 </td><td colspan=1 rowspan=1 > 2 operated for Myanmar Air Force </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > ATR 72-600 </td><td colspan=1 rowspan=1 > 6 </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > 70 </td><td colspan=1 rowspan=1 > 70 </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > Boeing 737-800 </td><td colspan=1 rowspan=1 > 4 </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > 8 </td><td colspan=1 rowspan=1 > 24 </td><td colspan=1 rowspan=1 > 132 </td><td colspan=1 rowspan=1 > 164 </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > Boeing 737-8 MAX </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > 6 </td><td colspan=4 rowspan=1 > TBA </td><td colspan=1 rowspan=1 > Deliveries from 2019. </td></tr>
<tr> <td colspan=1 rowspan=1 > Cessna 208 Caravan </td><td colspan=1 rowspan=1 > 2 </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > 9 </td><td colspan=1 rowspan=1 > 9 </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > Embraer E-190 </td><td colspan=1 rowspan=1 > 2 </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > 20 </td><td colspan=1 rowspan=1 > 80 </td><td colspan=1 rowspan=1 > 100 </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <th colspan=1 rowspan=1 > Total </th><th colspan=1 rowspan=1 > 18 </th><th colspan=1 rowspan=1 > 6 </th><th colspan=6 rowspan=1 >  </th></tr>
</table>
Question:
Which two aircraft does the Myanmar National Airlines have the most in service?
Answer:
Myanmar National Airlines has a fleet with the most numerous airplanes being the Boeing 737-800 and ATR 72-600 aircraft.