Y축 제목
                    ↑
        100 ────────┤
         80 ────────┤       █
         60 ────────┤       █       █
         40 ────────┤   █   █       █
         20 ────────┤   █   █   █   █
          0 ────────┴────────────────────→ X축
                      1   2   3   4
                          ↑
                       X축 눈금

이정도는 가져오라고 ㅅㅂ 뭐 얼마나 차이인지 높이 비교만함??