diff --git a/src/test/java/edu/iris/dmc/station/mapper/CoefficientsMapperTest.java b/src/test/java/edu/iris/dmc/station/mapper/CoefficientsMapperTest.java
new file mode 100644
index 0000000..2f1c158
--- /dev/null
+++ b/src/test/java/edu/iris/dmc/station/mapper/CoefficientsMapperTest.java
@@ -0,0 +1,103 @@
+package edu.iris.dmc.station.mapper;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertTrue;
+
+import java.io.EOFException;
+import java.io.File;
+import java.math.BigDecimal;
+import java.util.List;
+
+import javax.xml.bind.JAXBContext;
+import javax.xml.bind.Marshaller;
+
+import org.junit.Test;
+
+import edu.iris.dmc.IrisUtil;
+import edu.iris.dmc.fdsn.station.model.Channel;
+import edu.iris.dmc.fdsn.station.model.FDSNStationXML;
+import edu.iris.dmc.fdsn.station.model.Network;
+import edu.iris.dmc.fdsn.station.model.Response;
+import edu.iris.dmc.fdsn.station.model.Station;
+import edu.iris.dmc.seed.BlocketteFactory;
+import edu.iris.dmc.seed.Volume;
+import edu.iris.dmc.seed.control.station.B050;
+import edu.iris.dmc.seed.control.station.B052;
+import edu.iris.dmc.seed.control.station.B053;
+import edu.iris.dmc.seed.control.station.B054;
+import edu.iris.dmc.station.converter.SeedToXmlDocumentConverter;
+import edu.iris.dmc.station.converter.XmlToSeedDocumentConverterTest;
+
+public class CoefficientsMapperTest {
+
+
+@SuppressWarnings("null")
+@Test
+public void normilization_frequency() throws Exception {
+	File source = new File(
+			XmlToSeedDocumentConverterTest.class.getClassLoader().getResource("UW.LON.dataless.20200204125001").getFile());
+
+	Volume original = IrisUtil.readSeed(source);
+	 B054 coeff = null;
+	 B050 datasta = original.getB050s().get(0);
+	 List <B052> datachan = datasta.getB052s();
+	 try {
+	 for (int i2=0; i2 < datachan.size(); i2++) {
+		// if(datachan.get(i2).getResponseStages().get(0).getBlockettes().get(0)==null) {
+	
+		 //}else {
+		 // pzlist.add(i2, (B053) datachan.get(i2).getResponseStages().get(0).getBlockettes().get(0));
+		// }
+		  if(datachan.get(i2).getChannelCode().matches("SNE")) {
+			  coeff = (B054) datachan.get(i2).getResponseStages().get(2).getBlockettes().get(0);
+			  System.out.println(coeff.getNumerators());
+		  }
+	 }
+	 
+	 }catch (Exception e) {
+         /* This is a generic Exception handler which means it can handle
+          * all the exceptions. This will execute if the exception is not
+          * handled by previous catch blocks.
+          */
+         System.out.println("Exception occurred first loop");
+      }		  
+	FDSNStationXML document = SeedToXmlDocumentConverter.getInstance().convert(original);
+	
+	
+	
+	JAXBContext jContext = JAXBContext.newInstance(FDSNStationXML.class);
+    //creating the marshaller object
+    Marshaller marshallObj = jContext.createMarshaller();
+    //setting the property to show xml format output
+    marshallObj.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
+
+    Network net = document.getNetwork().get(0);
+    Station sta = net.getStations().get(0);
+    Response res = null;
+    
+    ///TODO FInd the null pointer and remove it. 
+    List<Channel> cha  = sta.getChannels();
+    System.out.println(cha.size());
+    int n=0;
+    try {
+    for (int i=0; i < cha.size(); i++) {
+    	if(cha.get(i).getCode().matches("SNE")) {
+    	  res = cha.get(i).getResponse();
+    	   
+      }
+    }
+	}catch (Exception e) {
+         /* This is a generic Exception handler which means it can handle
+          * all the exceptions. This will execute if the exception is not
+          * handled by previous catch blocks.
+          */
+         System.out.println("Exception occurred second loop");
+     }
+    //assertEquals(res.getStage().get(1).getCoefficients().getDenominator().get(0).getValue(), coeff.getDenominators().get(0).getValue(), 0.1);
+    assertEquals(res.getStage().get(2).getCoefficients().getNumerator().get(0).getValue(), coeff.getNumerators().get(0).getValue(), 0.0001);
+    assertEquals(res.getStage().get(2).getCoefficients().getNumerator().get(0).getPlusError(), coeff.getNumerators().get(0).getError(), 0.00001);
+
+
+}
+}