ต้องการค่า จาก $objResult->total ไปแสดงผลเป็นค่า Sum และ AVG

<?php
   
                $nowYear = date('Y');
                $startYear = 2549-543;

                for($year=$nowYear;$year>=$startYear;$year--) 
                {    
                    echo  "<tr>";
                    echo  "<td><b>".($year+543)."</b></td>";

                    for($month=1;$month<=12;$month++)
                    {
                         $dmonth =cal_days_in_month(CAL_GREGORIAN, $month, $year); 
                         //echo "There were" .$dmonth. "days in month ".$month."-".$year."<br><br>";

                        $strSQL= "SELECT COUNT (VN) as total FROM DNStatistica.dbo.ST_MASTER WHERE VisitDate BETWEEN '".$nowYear."-".$month."-1' AND '".$nowYear."-".$month."-".$dmonth."' AND Cxl='0'";

                            $objExec = odbc_exec($conn,$strSQL) or die ("Error SQL [".$strSQL."]");
                            while($objResult = odbc_fetch_object($objExec))
                            {
                                    $net=$objResult->total*12;
                                    $avg=$net/365;
                                    echo "<td>".(number_format($objResult->total))."<br></td>";
                            }

                    }
                    echo "<td>".(number_format($net))."</td>"; // แสดงค่า sum
                    echo "<td>".(number_format($avg, 2))."</td>";// แสดงค่า Avg
                    
                    $nowYear--;

                    echo "</tr>";
                }

                ?>