Add unit to graph axes

src/ScanPGunVgrid.py

@@ -139,8 +139,8 @@ def main():
         plt.plot(xp,p(xp), label = "Fitting", color="orange")
         #plt.plot(xp,y_conv[:-3], label = "2nd order derivate")
         plt.title(str(graph_title))
-        plt.xlabel('GUN Vgrid')
-        plt.ylabel('Booster current')
+        plt.xlabel('GUN Vgrid (V)')
+        plt.ylabel('Booster current (mA)')
         plt.legend(loc=0)
         fig = plt.gcf()
         fig2elog(fig,elog_text)