A.209.2~313.8J/kg(50~75kcal/kg)
B.418.4~502.1J/kg(100~120kcal/kg)
C.313.8~418.4J/kg(75~100kcal/kg)
D.502.1~627.6J/kg(120~150kcal/kg)
E.>627.6J/kg(150kcal/kg)