for ($j = 1; $j <= $#model; $j++)  {
   
   $worksheet->write($rowCounter,0, $model[$j]);
   if ($j == 0) {
   $worksheet->write($rowCounter,1, $devicePerModel);
                }
   $worksheet->write($rowCounter,2, $devicesPerVariant[$j]);
   $worksheet->write($rowCounter,3, $processor[$j]);
   $worksheet->write($rowCounter,4, $memory[$j]);
   $worksheet->write($rowCounter,5, $softwareVersion[$j]);
   $rowCounter++;
        }

   $workbook->close();
}