--- a/artifacts/src/main/java/org/dive4elements/river/artifacts/sinfo/tkhstate/BedHeightsFinder.java	Fri Aug 10 17:07:30 2018 +0200
+++ b/artifacts/src/main/java/org/dive4elements/river/artifacts/sinfo/tkhstate/BedHeightsFinder.java	Fri Aug 10 17:31:46 2018 +0200
@@ -102,7 +102,7 @@
      *
      * @return <code>null</code> if no bed height with the given id exists.
      */
-    private static BedHeightsFinder forId(final Calculation problems, final int id, final DoubleRange range) {
+    public static BedHeightsFinder forId(final Calculation problems, final int id, final DoubleRange range) {
 
         final BedHeight bedHeight = BedHeight.getBedHeightById(id);
         if (bedHeight == null)
@@ -153,6 +153,12 @@
         return this.values.keySet();
     }
 
+    public DoubleRange getKmRange() {
+        if (this.values.isEmpty())
+            return null;
+        return new DoubleRange(this.values.firstKey().doubleValue(), this.values.lastKey().doubleValue());
+    }
+
     public double getMeanBedHeight(final double km) {
         return interpolateBedHeights(km, BedHeightValueType.value);
     }