capital N for FFT segments

modelsusceptlown.py

@@ -90,10 +90,10 @@ def plot_si_diags(ax, s, data, alphax, alphay, xthresh, ythresh, cell_name):
     ax.set_xlim(0, 9)
     n = datax[0, 'nsegs']
     if alphax == 0:
-        ax.set_xlabel(f'SI, $c=0$, $N=10^{np.log10(n):.0f}$')
+        ax.set_xlabel(f'SI($r$), $c=0$, $N=10^{np.log10(n):.0f}$')
     else:
-        ax.set_xlabel(f'SI, $N=10^{np.log10(n):.0f}$')
-    ax.set_ylabel('SI, $N=100$')
+        ax.set_xlabel(f'SI($r$), $N=10^{np.log10(n):.0f}$')
+    ax.set_ylabel('SI($r$), $N=100$')
     ax.set_xticks_delta(4)
     ax.set_yticks_delta(4)
     ax.set_minor_xticks_delta(1)