Spin-down ratio, R, as function of determined magnetic inclination angles for intermittent pulsars, PSRs J1832+0029, J1841−0500, J1929+1357, and B1931+24. For PSR J1910+0517, only geometry information is available. These values are compared with the LSTa prediction (black line) and its uncertainty (blue band). In addition, the dependence of the spin-down ratio on α, as predicted by Eq. (7), is plotted for different plasma filling factors: η = 0, 0.1, 0.5, 0.8, and 0.95.