These tables contain numerical values for the distortion of the spectral intensity {Delta}I/y defined by the equation {Delta}I/y = 1/y * X^3^/(e^X^-1) * {Delta}n(X)/n0(X) = X^3^/(e^X^-1)F({theta}e,X) The spectral intensity is the function of two variables X and {theta}e. Here X={omega}/k_B_T_0_, {omega} being the photon angular frequency and k_B_T_0_ being the thermal energy of CMB photons, and {theta}e=k_B_Te/m_e_c^2^, k_B_Te being the thermal energy of the electrons and m_e_*c^2^ being the electron rest energy (T_0_ is the temperature of the cosmic microwave background radiation). In these tables, the range for X is taken as 0<X<20 and the range for {theta}e is taken as 0.002<{theta}e<0.100.