} elseif (strpos($column, 'ExtraGrades') !== false) {
                                    $periodId = str_replace('ExtraGrades', '', $column);
                                    if ($gradeListFromAnotherDivision && isset($gradeListFromAnotherDivision[$periodId][$tblPerson->getId()])) {
                                        $data[$column] = implode(', ', $gradeListFromAnotherDivision[$periodId][$tblPerson->getId()])
                                            . ' '