z              |zeta(z)        |1.+special.zetac(z)
===================================================
    3.883930087|     1.09078037|    1.090779708
    1.062471151|    16.58913423|    16.58913423
 -0.01487028599|  -0.4865537068|  -0.4865537068
    2.940099359|    1.214368731|    1.214368723
    1.280001879|    4.168622049|    4.168622049
   0.6179448962|   -2.068713508|   -2.068713508
   0.7636303306|   -3.670922913|   -3.670922913
    2.005397081|    1.639902859|    1.639902859
     1.48781085|    2.661523536|    2.661523536
    3.359938741|    1.143811919|    1.143811844