up to -10$^9$ V/m (state 2$'$), leads to a [*linear decrease*]{} of the electrical toroidal moment. Interestingly, this decrease is quantified by a slope $dG_z/dE$ that is exactly [*opposite*]{} to the corresponding one when going from state 1 to state 2. As a result, the $g_{11}$ and $g_{22}$ gyrotropic coefficients associated with the evolution from state 5 to state 2$'$ are now [*negative*]{} and equal $-$$0.94 \times
10^{-7}$ at 1GHz.

Finally, Figures 1 and 2 indicate that varying now the $ac$ field from its minimal value of -10$^9$ V/m to its maximal value of 10$^9$ V/m leads to the following succession of states: 2$'$, 5, 1$'$, 3$'$, $\alpha$$'$, $\beta$$'$, 4$'$, $\gamma$$'$, 5$'$ and 2, where the $'$ superscript used to denote the i$'$ states (with $i$=2, 3, 4, 5, $\alpha$, $\beta$ and $\gamma$) indicates that the corresponding states have $z$-components of their dipoles that are all opposite to those of state $i$ (for instance, state $\beta$$'$ has $z$-components of the dipoles being positive in the medium while being negative in the wires, as exactly opposite to state $\beta$). During this path from state 2$'$ to state 2, the gyrotropic coefficients $g_{11}$ and $g_{22}$ can be negative (from state 2$'$ to 