--- a/flys-artifacts/src/main/java/de/intevation/flys/artifacts/math/StdDevOutlier.java	Fri Jan 11 13:57:38 2013 +0100
+++ b/flys-artifacts/src/main/java/de/intevation/flys/artifacts/math/StdDevOutlier.java	Fri Jan 11 22:16:22 2013 +0100
@@ -2,21 +2,12 @@
 
 import java.util.List;
 
-import org.apache.commons.math.MathException;
-
-import org.apache.commons.math.distribution.TDistributionImpl;
-
-import org.apache.commons.math.stat.descriptive.moment.Mean;
 import org.apache.commons.math.stat.descriptive.moment.StandardDeviation;
 
 import org.apache.log4j.Logger;
 
-import de.intevation.flys.artifacts.model.sq.SQ;
-
 public class StdDevOutlier
 {
-    public static final double EPSILON = 1e-5;
-
     public static final double DEFAULT_FACTOR = 3;
 
     private static Logger log = Logger.getLogger(StdDevOutlier.class);
@@ -28,7 +19,11 @@
         return findOutlier(values, DEFAULT_FACTOR, null);
     }
 
-    public static Integer findOutlier(List<Double> values, double factor, double[] stdDevResult) {
+    public static Integer findOutlier(
+        List<Double> values,
+        double       factor, 
+        double []    stdDevResult
+    ) {
         boolean debug = log.isDebugEnabled();
 
         if (debug) {
@@ -41,7 +36,7 @@
             log.debug("Values to check: " + N);
         }
 
-        if (values.size() < 3) {
+        if (N < 3) {
             return null;
         }
 
@@ -49,15 +44,13 @@
 
         double maxValue = -Double.MAX_VALUE;
         int    maxIndex = -1;
-        int    ndx = 0;
-        for (int i = values.size()-1; i >= 0; --i) {
+        for (int i = N-1; i >= 0; --i) {
             double value = Math.abs(values.get(i));
             stdDev.increment(value);
             if (value > maxValue) {
                 maxValue = value;
-                maxIndex = ndx;
+                maxIndex = i;
             }
-            ++ndx;
         }
 
         double sd = stdDev.getResult();
@@ -69,9 +62,11 @@
             log.debug("accepted: " + accepted);
             log.debug("max value: " + maxValue);
         }
+
         if (stdDevResult != null) {
             stdDevResult[0] = sd;
         }
+
         return maxValue > accepted ? maxIndex : null;
     }
 }