Not sure I understand that formula. In cell O3 would like a formula that would include all of theses formulas:
=IF(R1C16="2", ROUND(1.031118+(-5.1827*10^-4)*RC[-2]+(-3.5109*10^-9)*RC[-2]^2+(-1.9836*10^-11)*RC[-2]^3,5)
=IF(R1C16="3",ROUND(1.031118+(-5.1827*10^-4)*RC[-2]+(-3.5109*10^-9)*RC[-2]^2+(-1.9836*10^-11)*RC[-2]^3,5))
=IF(R1C16="4",ROUND(1.038382492+(-6.2307*10^-4)*RC[-2]+(-2.8505*10^-7)*RC[-2]^2+(1.2692*10^-10)*RC[-2]^3,5))
=IF(R1C16="5",ROUND(1.031436449+(-5.2302*10^-4)*RC[-2]+(-2.5217*10^-9)*RC[-2]^2+(-2.1384*10^-10)*RC[-2]^3,5))
=IF(R1C16="6",ROUND(1.032307+(-5.2815*10^-4)*RC[-2]+(-1.8416*10^-7)*RC[-2]^2+(1.89256*10^-10)*RC[-2]^3,5))
=IF(R1C16="7",ROUND(1.035323647+(-5.8887*10^-4)*RC[-2]+(2.46508*10^-9)*RC[-2]^2+(-7.2802*10^-12)*RC[-2]^3,5))
=ROUND(V_C_F(RC[-1],RC[-2],R1C16,0,0,),5)