if( $data[ $pixel ] == 0 ){
            $image->setPixel( $x, $y, $dbz1 );
        }
        elsif( $data[ $pixel ] <= 10 ){
            $image->setPixel( $x, $y, $dbz5 );
        }
        elsif( $data[ $pixel ] <= 20 ){
            $image->setPixel( $x, $y, $dbz10 );
        }
        elsif( $data[ $pixel ] <= 30 ){
            $image->setPixel( $x, $y, $dbz15 );
        }
        else {
            ## What do you want to do if the value is greater than 30??
        }