--- a/flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/sq/Measurement.java	Thu Jul 12 16:15:30 2012 +0000
+++ b/flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/sq/Measurement.java	Thu Jul 12 17:34:40 2012 +0000
@@ -13,7 +13,42 @@
         this.data = data;
     }
 
-    /** TODO: Extract data. */
+    protected double get(String name) {
+        Number value = (Number)data.get(name);
+        return value != null ? value.doubleValue() : Double.NaN;
+    }
+
+    public double S_SS() {
+        return get("TSAND");
+    }
+
+    public double S_SF() {
+        return get("TSCHWEB") - get("TSAND");
+    }
+
+    public double Q() {
+        return get("Q");
+    }
+
+    public double S_BL_S() {
+        // TODO: Implement me!
+        return Double.NaN;
+    }
+
+    public double S_BL_FG() {
+        // TODO: Implement me!
+        return Double.NaN;
+    }
+
+    public double S_BL_CG() {
+        // TODO: Implement me!
+        return Double.NaN;
+    }
+
+    public double S_BL() {
+        // TODO: Implement me!
+        return Double.NaN;
+    }
 
     @Override
     public String toString() {