(issue1782) Select index based on km for step generation If we calculate from a larger KM to a smaller KM the larger index refers to the smaller KM so to correctly draw the steps with the assumption that the previous q is drawn together with the current q we have to select the next / prev index accordingly.

<?xml version="1.0" encoding="UTF-8"?>
<wms-services>
  <wms name="OSM Hintergrundkarte" url="http://osm.intevation.de/bfg/service?"/>
  <wms name="Pegelonline" url="http://www.pegelonline.wsv.de/webservices/gis/wms/aktuell?"/>
</wms-services>