      t0 = -8*M*q**2/R**2/pp**2
                              WT_dRg3N(1,1)=t0

      t0 = -8*M*q*p/R**2/pp**2
                              WT_dRg3N(1,2)=t0

      t0 = 4*M*(-1+q**2+p**2)*q/R**2/pp**2
                              WT_dRg3N(1,3)=t0

      t0 = -8*M*p**2/R**2/pp**2
                              WT_dRg3N(2,2)=t0

      t0 = 4*M*(-1+q**2+p**2)*p/R**2/pp**2
                              WT_dRg3N(2,3)=t0

      t0 = -2*M*(-1+q**2+p**2)**2/pp**2/R**2
                              WT_dRg3N(3,3)=t0

