--- a/artifacts/src/main/java/org/dive4elements/river/artifacts/model/Calculation2.java	Fri Sep 05 12:54:58 2014 +0200
+++ b/artifacts/src/main/java/org/dive4elements/river/artifacts/model/Calculation2.java	Fri Sep 05 12:58:17 2014 +0200
@@ -20,7 +20,7 @@
 public class Calculation2
 extends      Calculation
 {
-    private static Logger logger = Logger.getLogger(Calculation2.class);
+    private static Logger log = Logger.getLogger(Calculation2.class);
 
     protected double km;
 
@@ -51,7 +51,7 @@
             pw.flush();
         }
         catch (IOException ioe) {
-            logger.error(ioe);
+            log.error(ioe);
         }
         finally {
             if (pw != null) {
@@ -62,21 +62,21 @@
 
     public CalculationResult calculate(WstValueTable wst) {
 
-        boolean debug = logger.isDebugEnabled();
+        boolean debug = log.isDebugEnabled();
 
         if (debug) {
-            logger.debug("Calculation2.calculate: km " + km);
+            log.debug("Calculation2.calculate: km " + km);
         }
 
         double [][] wqs = wst.interpolateWQ(km, this);
 
         if (debug) {
             if (hasProblems()) {
-                logger.debug("problems: " + problemsToString());
+                log.debug("problems: " + problemsToString());
             }
-            logger.debug("wqs: " + wqs);
+            log.debug("wqs: " + wqs);
             if (wqs != null && wqs[0] != null) {
-                logger.debug("wqs length: " + wqs[0].length);
+                log.debug("wqs length: " + wqs[0].length);
                 // TODO: Uncomment to see the data externally.
                 //dump(wqs);
             }
@@ -96,7 +96,7 @@
         WQKms wqkms = new WQKms(kms, qs, ws, String.valueOf(km));
 
         if (hasProblems()) {
-            logger.debug("found " + numProblems() + " problems.");
+            log.debug("found " + numProblems() + " problems.");
             wqkms.removeNaNs();
         }