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:
Roentgenium
Table title:
Stability and half-lives
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=2 > Isotope </th><th colspan=3 rowspan=1 > Half-life </th><th colspan=1 rowspan=2 > Decay mode </th><th colspan=1 rowspan=2 > Discovery year </th><th colspan=1 rowspan=2 > Discovery reaction </th></tr>
<tr> <th colspan=1 rowspan=1 > Recent publications </th><th colspan=1 rowspan=1 > Ref </th><th colspan=1 rowspan=1 > NUBASE 2016 </th></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 272Rg </td><td colspan=1 rowspan=1 > 3.8 ms </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > 4.5 ms </td><td colspan=1 rowspan=1 > α </td><td colspan=1 rowspan=1 > 1994 </td><td colspan=1 rowspan=1 > 209Bi(64Ni,n) </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 274Rg </td><td colspan=1 rowspan=1 > 14 ms </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > 29 ms </td><td colspan=1 rowspan=1 > α </td><td colspan=1 rowspan=1 > 2004 </td><td colspan=1 rowspan=1 > 278Nh(—,α) </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 278Rg </td><td colspan=1 rowspan=1 > 4.2 ms </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > 8 ms </td><td colspan=1 rowspan=1 > α </td><td colspan=1 rowspan=1 > 2006 </td><td colspan=1 rowspan=1 > 282Nh(—,α) </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 279Rg </td><td colspan=1 rowspan=1 > 90 ms </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > 180 ms </td><td colspan=1 rowspan=1 > α </td><td colspan=1 rowspan=1 > 2003 </td><td colspan=1 rowspan=1 > 287Mc(—,2α) </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 280Rg </td><td colspan=1 rowspan=1 > 4.6 s </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > 4.3 s </td><td colspan=1 rowspan=1 > α, EC </td><td colspan=1 rowspan=1 > 2003 </td><td colspan=1 rowspan=1 > 288Mc(—,2α) </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 281Rg </td><td colspan=1 rowspan=1 > 17 s </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > 24 s </td><td colspan=1 rowspan=1 > SF, α </td><td colspan=1 rowspan=1 > 2010 </td><td colspan=1 rowspan=1 > 293Ts(—,3α) </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 282Rg </td><td colspan=1 rowspan=1 > 1.7 min </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > 1.6 min </td><td colspan=1 rowspan=1 > α </td><td colspan=1 rowspan=1 > 2010 </td><td colspan=1 rowspan=1 > 294Ts(—,3α) </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 283Rg </td><td colspan=1 rowspan=1 > 5.1 min </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > SF </td><td colspan=1 rowspan=1 > 1999 </td><td colspan=1 rowspan=1 > 283Cn(e−,νe) </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 286Rg </td><td colspan=1 rowspan=1 > 10.7 min </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > α </td><td colspan=1 rowspan=1 > 1998 </td><td colspan=1 rowspan=1 > 290Fl(e−,νeα) </td></tr>
</table>
Question:
How many isotopes of roentgenium have been reported with masses of 272, 274, 278–283, and 286?
Answer:
Nine different isotopes of roentgenium have been reported with masses of 272, 274, 278–283, and 286.