Results: Update plot XY and add overflow on this plot.

src/Solver/Mage.py

@@ -1023,9 +1023,12 @@ class Mage8(Mage):
                         reach.set(ri, timestamp, key, d)
                         if key == "Z":
                             profile = reach.profile(ri)
-                            ptX, ptY = profile.geometry.get_water_limits(d)
-                            reach.set(ri, timestamp, "ptX", ptX)
-                            reach.set(ri, timestamp, "ptY", ptY)
+                            limits = profile.geometry.get_water_limits(d)
+                            reach.set(
+                                ri, timestamp,
+                                "water_limits",
+                                limits
+                            )
 
                 endline()
                 end = newline().size <= 0