Parameters of sensor response curve fitting by polynomial function $\mathbf{y}={\mathbf{A}}_{\mathbf{3}}{\mathbf{x}}^{\mathbf{3}}+{\mathbf{A}}_{\mathbf{2}}{\mathbf{x}}^{\mathbf{2}}+{\mathbf{A}}_{\mathbf{1}}\mathbf{x}+{\mathbf{A}}_{\mathbf{0}}$.

R1.Poly3/G1.Poly3  $A_3$ R1.Poly2/G1.Poly2  $A_2$ R1.Poly1/G1.Poly1  $A_1$ R1.Poly0/G1.Poly0  $A_0$