อยากให้ตาราง pdf อยู่ตรงกลาง ทำอย่างไงครับ ช่วยแนะนำด้วยนะครับ

<?php
require('fpdf/fpdf.php');

class PDF extends FPDF
{
//Load data
function LoadData($file)
{
	//Read file lines
	$lines=file($file);
	$data=array();
	foreach($lines as $line)
		$data[]=explode(';',chop($line));
	return $data;
}

//Simple table
function BasicTable($header,$data)
{
	//Header
	$w=array(30,10,10,10,15,15,20,20,15,15);
	//Header
	for($i=0;$i<count($header);$i++)
		$this->Cell($w[$i],9,$header[$i],1,0,'C');
	    $this->Ln();
	//Data
	foreach ($data as $eachResult) 
	{
        //$this->Cell(20,6,$eachResult["id_std"],1);/*ดึงมาจากดาต้าเบสนะครับ*/
		$this->Cell(30,6,$eachResult['Day'].'-'.$eachResult['Month'].'-'.$eachResult['Year'],1,0,'C');
		$this->Cell(10,6,$eachResult['V'],1,0,'C');
		$this->Cell(10,6,$eachResult['PF'],1,0,'C');
		$this->Cell(10,6,$eachResult['A'],1,0,'C');
		$this->Cell(15,6,$eachResult['After'],1,0,'C');
		$this->Cell(15,6,$eachResult['Befores'],1,0,'C');
		$this->Cell(20,6,$eachResult['KHW_Unit'],1,0,'C');
		$this->Cell(20,6,$eachResult['KHW_Total'],1,0,'C');
		$this->Cell(15,6,$eachResult['Time'],1,0,'C');
		$this->Cell(15,6,$eachResult['Remark'],1,0,'C');
		//$this->Cell(20,6,$eachResult["Budget"],1);
		$this->Ln(); 
	   }
   }
}
$pdf=new PDF();
//Column titles
$header=array('Date','V','PF','A','After','Befores','KHW Unit','KHW Total','Time','Remark');
//Data loading
include('config2.inc.php');
$n= 'PRESS MDB.210V';
$F=date('F');
$Y=date('Y');
$sql_show = "select * from Datametertotal where Name = '$n' and Month = '$F' and Year = '$Y' ";
$result_show = mysql_query($sql_show) or die(mysql_error());
$resultData =  array();
for ($i=0;$i<mysql_num_rows($result_show);$i++) 
	{
	$result = mysql_fetch_array($result_show);
	array_push($resultData,$result);
	}
//*** Table 1 ***//
$pdf->AddPage();
$pdf->SetFont('Arial','',8);
$pdf->Cell(0,6,'Meter Electirc',0,1,'C');
$pdf->Ln(5);
$pdf->Cell(0,6,$n,0,1,'C');
$pdf->Ln(5);
$pdf->BasicTable($header,$resultData);
$pdf->Output();
?>