1. Ambient Temp : 105℃＜Tx≦125℃
L_x = L_r \times 1.7^{\frac{(T_o-T_x)}{10}} \times 2^{\frac{-\triangle T_x}{5}} \\ where \triangle Tx=\triangle T₀(Ix / I₀)²
2. Ambient Temp : Tx≦105℃
L_x = L_r \times 1.7^{\frac{(125-105)}{10}} \times 2^{\frac{(105-T_x)}{10}} \times 2^{\frac{-\triangle T_x}{5}} \\ where \triangle Tx=\triangle T₀(Ix / I₀)²