      t0 = 0
                                dxC10(1,1)=t0

      t0 = 0
                                dxC10(1,2)=t0

      t0 = 8.D0/15.D0*sqrt(pi)/R**2*M*sqrt(3.D0)
                                dxC10(1,3)=t0

      t0 = 0
                                dxC10(1,4)=t0

      t0 = 0
                                dxC10(2,2)=t0

      t0 = 0
                                dxC10(2,3)=t0

      t0 = 0
                                dxC10(2,4)=t0

      t0 = 0
                                dxC10(3,3)=t0

      t0 = 0
                                dxC10(3,4)=t0

      t0 = 0
                                dxC10(4,4)=t0

