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:
Body mass index
Table title:
Categories
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Category </th><th colspan=2 rowspan=1 > BMI (kg/m2) </th><th colspan=2 rowspan=1 > BMI Prime </th></tr>
<tr> <td colspan=1 rowspan=1 >  </td><th colspan=1 rowspan=1 > from </th><th colspan=1 rowspan=1 > to </th><th colspan=1 rowspan=1 > from </th><th colspan=1 rowspan=1 > to </th></tr>
<tr> <td colspan=1 rowspan=1 > Very severely underweight </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > 15 </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > 0.60 </td></tr>
<tr> <td colspan=1 rowspan=1 > Severely underweight </td><td colspan=1 rowspan=1 > 15 </td><td colspan=1 rowspan=1 > 16 </td><td colspan=1 rowspan=1 > 0.60 </td><td colspan=1 rowspan=1 > 0.64 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > Underweight </td><td colspan=1 rowspan=1 > 16 </td><td class="highlighted"  colspan=1 rowspan=1 > 18.5 </td><td colspan=1 rowspan=1 > 0.64 </td><td colspan=1 rowspan=1 > 0.74 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > Normal (healthy weight) </td><td class="highlighted"  colspan=1 rowspan=1 > 18.5 </td><td class="highlighted"  colspan=1 rowspan=1 > 25 </td><td colspan=1 rowspan=1 > 0.74 </td><td colspan=1 rowspan=1 > 1.0 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > Overweight </td><td class="highlighted"  colspan=1 rowspan=1 > 25 </td><td class="highlighted"  colspan=1 rowspan=1 > 30 </td><td colspan=1 rowspan=1 > 1.0 </td><td colspan=1 rowspan=1 > 1.2 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > Obese Class I (Moderately obese) </td><td class="highlighted"  colspan=1 rowspan=1 > 30 </td><td colspan=1 rowspan=1 > 35 </td><td colspan=1 rowspan=1 > 1.2 </td><td colspan=1 rowspan=1 > 1.4 </td></tr>
<tr> <td colspan=1 rowspan=1 > Obese Class II (Severely obese) </td><td colspan=1 rowspan=1 > 35 </td><td colspan=1 rowspan=1 > 40 </td><td colspan=1 rowspan=1 > 1.4 </td><td colspan=1 rowspan=1 > 1.6 </td></tr>
<tr> <td colspan=1 rowspan=1 > Obese Class III (Very severely obese) </td><td colspan=1 rowspan=1 > 40 </td><td colspan=1 rowspan=1 > 45 </td><td colspan=1 rowspan=1 > 1.6 </td><td colspan=1 rowspan=1 > 1.8 </td></tr>
<tr> <td colspan=1 rowspan=1 > Obese Class IV (Morbidly Obese) </td><td colspan=1 rowspan=1 > 45 </td><td colspan=1 rowspan=1 > 50 </td><td colspan=1 rowspan=1 > 1.8 </td><td colspan=1 rowspan=1 > 2 </td></tr>
<tr> <td colspan=1 rowspan=1 > Obese Class V (Super Obese) </td><td colspan=1 rowspan=1 > 50 </td><td colspan=1 rowspan=1 > 60 </td><td colspan=1 rowspan=1 > 2 </td><td colspan=1 rowspan=1 > 2.4 </td></tr>
<tr> <td colspan=1 rowspan=1 > Obese Class VI (Hyper Obese) </td><td colspan=1 rowspan=1 > 60 </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > 2.4 </td><td colspan=1 rowspan=1 >  </td></tr>
</table>
Question:
What are the BMI ranges for underweight, normal, overweight and obese?
Answer:
BMI ranges are underweight: under 18.5 kg/m², normal weight: 18.5 to 25, overweight: 25 to 30, obese: over 30.