private function _readMulRk()
	{
		$length = self::_GetInt2d($this->_data, $this->_pos + 2);
		$recordData = $this->_readRecordData($this->_data, $this->_pos + 4, $length);

		// move stream pointer to next record
		$this->_pos += 4 + $length;

		// offset: 0; size: 2; index to row
		$row = self::_GetInt2d($recordData, 0);

		// offset: 2; size: 2; index to first column
		$colFirst = self::_GetInt2d($recordData, 2);

		// offset: var; size: 2; index to last column
		$colLast = self::_GetInt2d($recordData, $length - 2);
		$columns = $colLast - $colFirst + 1;

		// offset within record data
		$offset = 4;

		for ($i = 0; $i < $columns; ++$i) {
			$columnString = PHPExcel_Cell::stringFromColumnIndex($colFirst + $i);

			// Read cell?
			if (($this->getReadFilter() !== NULL) && $this->getReadFilter()->readCell($columnString, $row + 1, $this->_phpSheet->getTitle()) ) {

				// offset: var; size: 2; index to XF record
				$xfIndex = self::_GetInt2d($recordData, $offset);

				// offset: var; size: 4; RK value
				$numValue = self::_GetIEEE754(self::_GetInt4d($recordData, $offset + 2));
				$cell = $this->_phpSheet->getCell($columnString . ($row + 1));
				if (!$this->_readDataOnly) {
					// add style
					$cell->setXfIndex($this->_mapCellXfIndex[$xfIndex]);
				}

				// add cell value
				$cell->setValueExplicit($numValue, PHPExcel_Cell_DataType::TYPE_NUMERIC);
			}

			$offset += 6;
		}
	}