ขอสอบถามการเขียน code เกี่ยวกับค่าเฉลี่ยจากแบบประเมินอ่ะครับ

<?php
$host= 'localhost';
$user = 'root';
$pwd = 'abc123';
$db = 'db_stu_rmutp';
$conn = mysql_connect($host,$user,$pwd) or die (mysql_error());
mysql_select_db($db);
$add = "SELECT SUM(q1),SUM(q2),SUM(q3),SUM(q4),SUM(q5),SUM(q6),SUM(q7),SUM(q8),SUM(q9),SUM(q10),SUM(q11),SUM(q12),SUM(q13),SUM(q14),SUM(q15),SUM(q16),SUM(q17),SUM(q18),SUM(q19),SUM(q20),SUM(q21),SUM(q22),SUM(q23) from form6";
$objQuery1 = mysql_query($add) or die ("Error Query [".$add."]");
$row1=mysql_fetch_array($objQuery1);

     $mark=$row1['SUM(q1)'];
	 $mark1=$row1['SUM(q2)'];
	 $mark2=$row1['SUM(q3)'];
	 $mark3=$row1['SUM(q4)'];
	 $mark4=$row1['SUM(q5)'];
	 $mark5=$row1['SUM(q6)'];
	 $mark6=$row1['SUM(q7)'];
	 $mark7=$row1['SUM(q8)'];
	 $mark8=$row1['SUM(q9)'];
	 $mark9=$row1['SUM(q10)'];
	 $mark10=$row1['SUM(q11)'];
	 $mark11=$row1['SUM(q12)'];
	 $mark12=$row1['SUM(q13)'];
	 $mark13=$row1['SUM(q14)'];
	 $mark14=$row1['SUM(q15)']; 
	 $mark15=$row1['SUM(q16)'];
	 $mark16=$row1['SUM(q17)'];
	 $mark17=$row1['SUM(q18)'];
	 $mark18=$row1['SUM(q19)'];
	 $mark19=$row1['SUM(q20)'];
	 $mark20=$row1['SUM(q21)'];
	 $mark21=$row1['SUM(q22)'];
	 $mark22=$row1['SUM(q23)'];
?>
<form>
<table width="500" border="1">
<tr>
<td><p>ด้านสิ่งอำนวยความสะดวกเอื้อต่อศิษย์เก่า</p></td><td><p>ค่าเฉลี่ย</p></td>
</tr>
<tr>
<td>1.<?php echo $mark;?></td><td>1</td>
</tr>
<tr>
<td>2.<?php echo $mark1;?></td><td>1</td>
</tr>
<tr>
<td>3.<?php echo $mark2;?></td><td>1</td>
</tr>
<tr>
<td>4.<?php echo $mark3;?></td><td>1</td>
</tr>
<tr>
<td>ผลรวม</td><td>0</td>
</tr>
</table>
<br>
<table width="500" border="1">
<tr>
<td><p>ด้านการจัดกิจกรรมเพื่อสร้างความสัมพันธ์แก่ศิษย์เก่า</p></td><td><p>ค่าเฉลี่ย</p></td>
</tr>
<tr>
<td>1.<?php echo $mark4;?></td><td>1</td>
</tr>
<tr>
<td>2.<?php echo $mark5;?></td><td>1</td>
</tr>
<tr>
<td>3.<?php echo $mark6;?></td><td>1</td>
</tr>
<tr>
<td>4.<?php echo $mark7;?></td><td>1</td>
</tr>
<tr>
<td>5.<?php echo $mark8;?></td><td>1</td>
</tr>
<tr>
<td>6.<?php echo $mark9;?></td><td>1</td>
</tr>
<tr>
<td>7.<?php echo $mark10;?></td><td>1</td>
</tr>
<tr>
<td>8.<?php echo $mark11;?></td><td>1</td>
</tr>
<tr>
<td>ผลรวม</td><td>0</td>
</tr>
</table>
<br>
<table width="500" border="1">
<tr>
<td><p>ด้านการจัดบริการให้คำปรึกษาแก่ศิษย์เก่า</p></td><td><p>ค่าเฉลี่ย</p></td>
</tr>
<tr>
<td>1.<?php echo $mark12;?></td><td>1</td>
</tr>
<tr>
<td>2.<?php echo $mark13;?></td><td>1</td>
</tr>
<tr>
<td>3.<?php echo $mark14;?></td><td>1</td>
</tr>
<tr>
<td>4.<?php echo $mark15;?></td><td>1</td>
</tr>
<tr>
<td>5.<?php echo $mark16;?></td><td>1</td>
</tr>
<tr>
<td>ผลรวม</td><td>0</td>
</tr>
</table>
<br>
<table width="500" border="1">
<tr>
<td><p>ด้านข้อมูลข่าวสารที่เป็นประโยชน์ต่อศิษย์เก่า</p></td><td><p>ค่าเฉลี่ย</p></td>
</tr>
<tr>
<td>1.<?php echo $mark17;?></td><td>1</td>
</tr>
<tr>
<td>2.<?php echo $mark18;?></td><td>1</td>
</tr>
<tr>
<td>3.<?php echo $mark19;?></td><td>1</td>
</tr>
<tr>
<td>4.<?php echo $mark20;?></td><td>1</td>
</tr>
<tr>
<td>5.<?php echo $mark21;?></td><td>1</td>
</tr>
<tr>
<td>6.<?php echo $mark22;?></td><td>1</td>
</tr>
<tr>
<td>ผลรวม</td><td>0</td>
</tr>
</table>
</form>