If you want all the data in a single column then each item needs to be in a separate row:
<tr><td><?php echo $mostrar['name'] ?></td></tr>
<tr><td><?php echo $mostrar['last'] ?></td></tr>
<tr><td><?php echo $mostrar['nameDad'] ?></td></tr>
<tr><td><?php echo $mostrar['nameMom'] ?></td></tr>
// etc.