   <td>$K = 2K_1 + K_2 + K_3,\qquad K' = K_2 + K_3$</td>
    </tr>
<tr><td><tt>he3_grad_lg1(ttc, p)</tt>
    <br><tt>he3_grad_lg2(ttc, p)</tt>
    <br><tt>he3_grad_lsgb(ttc, p)</tt></td>
    <td>Thuneberg's $\lambda_{G1}$, $\lambda_{G2}$ and $\lambda_{SG}^b$:
    <br>$\lambda_{G1} = \frac12\Delta^2 (K_2+K_3),\qquad
         \lambda_{G2} = \frac12\Delta^2 K_1,\qquad
         \lambda_{SG}^b = \Delta^2 K_2$</td>
    </tr>

<tr><td><tt>he3_cpar(ttc,p)</tt>
    <br><tt>he3_cperp(ttc,p)</tt></td>
    <td>Velocity