% with Df' Project_1_step_6 x = 3.269894294503869e-012 y = -1.557051916596687e-012 z = 6.370000000000011e+003 d = 1.000000000000179e-004 GPS_error = 1.149915768984156e-011 % Without Df' Project_1_step_6 x = -2.022008976847575e-012 y = -1.249239086740349e-012 z = 6.369999999999995e+003 d = 9.999999999998212e-005 GPS_error = 5.952110604667980e-012