public static function guiResponsiveness($endModel, $data, $report, $factor)
 {
     if (empty($data)) {
         return eRankerCommons::guiDefault($endModel, $data, $report, $factor);
     }
     $out = '</div><div class="responsivenessfactor clearfix row" style="margin-top: 10px;">';
     $out .= eRankerCommons::helperResponsiveness("phone", $data, $factor);
     $out .= eRankerCommons::helperResponsiveness("tablet", $data, $factor);
     $out .= eRankerCommons::helperResponsiveness("notebook", $data, $factor);
     $out .= eRankerCommons::helperResponsiveness("desktop", $data, $factor);
     if (empty($out)) {
         return eRankerCommons::guiDefault($endModel, $data, $report, $factor);
     }
     $out .= '</div>';
     return $out;
 }