= = = + + +

Extrapolating the four O(hz) results yields the three 0(h4 ) results presented in column 3. Extrapolating the three 0(h4) results yields the two 0(h6 ) results presented in column 4. Extrapolating the two 0(h6) results yields the final 0(h8) result presented in column 5. The 0(h8) value of Tz = 2248.24731430 K is accepted as the final result for Tz.