Results: Reach: Keep profiles global min and max.

src/Model/Results/River/River.py

@@ -304,6 +304,9 @@ class Reach(SQLSubModel):
                 lambda p: p.name[0:8] != 'interpol', self._profiles
             )
         )
+
+        self._global_index = (-1, -1)
+
         self._buffers = {}
 
     def __len__(self):
@@ -333,9 +336,15 @@ class Reach(SQLSubModel):
         return self._profiles[id]
 
     def set_global_index(self, indexs):
+        self._global_index = (indexs[0], indexs[-1])
+
         for profile, ind in zip(self._profiles, indexs):
             profile.global_index = ind
 
+    @property
+    def global_index(self):
+        return self._global_index
+
     @timer
     def set(self, profile_id, timestamp, key, data):
         self._profiles[profile_id].set(timestamp, key, data)