Update static/mapFiles/yaml/0220.yaml

static/mapFiles/yaml/0220.yaml

@@ -17,8 +17,8 @@ routeDetail:
     entryPoint: chester-line-jn
 
   - type: junction
-    miles: 54
+    miles: 53
-    chains: 20
+    chains: 12
     name: Chester Line Jn
     diverges: right
     direction: down
@@ -29,8 +29,8 @@ routeDetail:
   - type: siteof
     name: ""
     description: Only Dn Oxford electrified
-    miles: 54
+    miles: 53
-    chains: 40
+    chains: 12
 
   - type: electrificationChange
     miles: 53