diff --git a/.classpath b/.classpath
index d213a787..0a070b52 100644
--- a/.classpath
+++ b/.classpath
@@ -18,7 +18,6 @@
 	<classpathentry kind="lib" path="external/marytts-5.1.2/lib/voice-cmu-slt-hsmm-5.1.2.jar"/>
 	<classpathentry kind="lib" path="lib/Ab.jar"/>
 	<classpathentry kind="lib" path="lib/commons-math3-3.5.jar"/>
-	<classpathentry kind="lib" path="lib/javaFlacEncoder-0.3.1.jar"/>
 	<classpathentry kind="lib" path="lib/jSerialComm-1.3.4.jar"/>
 	<classpathentry kind="lib" path="lib/marytts-client-5.1.2-jar-with-dependencies.jar"/>
 	<classpathentry kind="lib" path="lib/marytts-runtime-5.1.2-jar-with-dependencies.jar"/>
diff --git a/.gitignore b/.gitignore
index 84c048a7..76aaeb65 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
 /build/
+/lib/Zutil.jar
diff --git a/.settings/org.eclipse.core.resources.prefs b/.settings/org.eclipse.core.resources.prefs
deleted file mode 100644
index 983eddac..00000000
--- a/.settings/org.eclipse.core.resources.prefs
+++ /dev/null
@@ -1,3 +0,0 @@
-eclipse.preferences.version=1
-encoding//lib/sphinx4-5prealpha-src/sphinx4-core/src/main/java=UTF-8
-encoding//lib/sphinx4-5prealpha-src/sphinx4-core/src/main/java/edu/cmu/sphinx/alignment/SimpleTokenizer.java=UTF-8
diff --git a/src/se/koc/hal/page/PCOverviewHttpPage.java b/src/se/koc/hal/page/PCOverviewHttpPage.java
index 7b231c78..cdce1caa 100644
--- a/src/se/koc/hal/page/PCOverviewHttpPage.java
+++ b/src/se/koc/hal/page/PCOverviewHttpPage.java
@@ -23,25 +23,45 @@ public class PCOverviewHttpPage implements HttpPage {
 		
 		try {
 			ArrayList<PowerData> minDataList = HalContext.db.exec(
-					"SELECT user.username as username, sensor_data_aggr.timestamp_start as timestamp, sensor_data_aggr.data as data "
+					"SELECT user.username as username, "
+						+ "sensor_data_aggr.timestamp_start as timestamp_start, "
+						+ "sensor_data_aggr.timestamp_end as timestamp_end , "
+						+ "sensor_data_aggr.data as data, "
+						+ "sensor_data_aggr.confidence as confidence, "
+						+ DataAggregatorDaemon.FIVE_MINUTES_IN_MS + " as period_length"
 					+ "FROM sensor_data_aggr, user, sensor "
 					+ "WHERE sensor.id = sensor_data_aggr.sensor_id "
-					+ "AND user.id = sensor.user_id "
-					+ "AND timestamp_end-timestamp_start == " + (DataAggregatorDaemon.FIVE_MINUTES_IN_MS-1), 
+						+ "AND user.id = sensor.user_id "
+						+ "AND timestamp_end-timestamp_start == " + (DataAggregatorDaemon.FIVE_MINUTES_IN_MS-1)
+						+ "AND timestamp_start > " + (System.currentTimeMillis() - DataAggregatorDaemon.DAY_IN_MS)
+					+ "ORDER BY timestamp_start ASC",
 					new SQLPowerDataBuilder());
 			ArrayList<PowerData> hourDataList = HalContext.db.exec(
-					"SELECT user.username as username, sensor_data_aggr.timestamp_start as timestamp, sensor_data_aggr.data as data "
+					"SELECT user.username as username, "
+						+ "sensor_data_aggr.timestamp_start as timestamp_start, "
+						+ "sensor_data_aggr.timestamp_end as timestamp_end , "
+						+ "sensor_data_aggr.data as data, "
+						+ "sensor_data_aggr.confidence as confidence, "
+						+ DataAggregatorDaemon.HOUR_IN_MS + " as period_length"
 					+ "FROM sensor_data_aggr, user, sensor "
 					+ "WHERE sensor.id = sensor_data_aggr.sensor_id "
-					+ "AND user.id = sensor.user_id "
-					+ "AND timestamp_end-timestamp_start == " + (DataAggregatorDaemon.HOUR_IN_MS-1), 
+						+ "AND user.id = sensor.user_id "
+						+ "AND timestamp_end-timestamp_start == " + (DataAggregatorDaemon.HOUR_IN_MS-1)
+						+ "AND timestamp_start > " + (System.currentTimeMillis() - 3*DataAggregatorDaemon.DAY_IN_MS)
+					+ "ORDER BY timestamp_start ASC", 
 					new SQLPowerDataBuilder());
 			ArrayList<PowerData> dayDataList = HalContext.db.exec(
-					"SELECT user.username as username, sensor_data_aggr.timestamp_start as timestamp, sensor_data_aggr.data as data "
+					"SELECT user.username as username, "
+						+ "sensor_data_aggr.timestamp_start as timestamp_start, "
+						+ "sensor_data_aggr.timestamp_end as timestamp_end , "
+						+ "sensor_data_aggr.data as data, "
+						+ "sensor_data_aggr.confidence as confidence, "
+						+ DataAggregatorDaemon.DAY_IN_MS + " as period_length"
 					+ "FROM sensor_data_aggr, user, sensor "
 					+ "WHERE sensor.id = sensor_data_aggr.sensor_id "
-					+ "AND user.id = sensor.user_id "
-					+ "AND timestamp_end-timestamp_start == " + (DataAggregatorDaemon.DAY_IN_MS-1), 
+						+ "AND user.id = sensor.user_id "
+						+ "AND timestamp_end-timestamp_start == " + (DataAggregatorDaemon.DAY_IN_MS-1)
+					+ "ORDER BY timestamp_start ASC",
 					new SQLPowerDataBuilder());
 		
 		
@@ -60,9 +80,9 @@ public class PCOverviewHttpPage implements HttpPage {
 	
 	public static class PowerData{
 		long timestamp;
-		int data;
+		String data;
 		String username;
-		public PowerData(long time, int data, String uname) {
+		public PowerData(long time, String data, String uname) {
 			this.timestamp = time;
 			this.data = data;
 			this.username = uname;
@@ -73,8 +93,26 @@ public class PCOverviewHttpPage implements HttpPage {
 		@Override
 		public ArrayList<PowerData> handleQueryResult(Statement stmt, ResultSet result) throws SQLException {
 			ArrayList<PowerData> list = new ArrayList<>();
+			long previousTimestampEnd = -1;
 			while(result.next()){
-				list.add(new PowerData(result.getLong("timestamp"), result.getInt("data"), result.getString("username")));
+				
+				long timestampStart = result.getLong("timestamp_start");
+				long timestampEnd = result.getLong("timestamp_end");
+				long periodLength = result.getLong("period_length");
+				int data = result.getInt("data");
+				String username = result.getString("username");
+				float confidence = result.getFloat("confidence");
+				
+				//add null data point to list if one or more periods of data is missing before this
+				if(previousTimestampEnd != -1 && timestampStart-previousTimestampEnd > periodLength){
+					list.add(new PowerData(previousTimestampEnd+1, "undefined", username));
+				}
+				
+				//add this data point to list
+				list.add(new PowerData(timestampStart, data/1000+"", username));
+				
+				//update previous end timestamp
+				previousTimestampEnd = timestampEnd;
 			}
 			return list;
 		}
diff --git a/web-resource/index.html b/web-resource/index.html
index 5abbc6f9..a4393e0b 100644
--- a/web-resource/index.html
+++ b/web-resource/index.html
@@ -22,19 +22,19 @@
 			chartData("min-power-chart", 
 					[
 					 {{#minData}}  
-						{ y: {{.timestamp}}, {{.username}}: {{.data}}/1000 },
+						{ y: {{.timestamp}}, {{.username}}: {{.data}} },
 					{{/minData}}
 					{ y: Date.now() },
 					]
 			);
 			chartData("hour-power-chart", 
 					[{{#hourData}}  
-						{ y: {{.timestamp}}, {{.username}}: {{.data}}/1000 },  
+						{ y: {{.timestamp}}, {{.username}}: {{.data}} },  
 					{{/hourData}}]
 			);
 			chartData("day-power-chart", 
 					[{{#dayData}}  
-						{ y: {{.timestamp}}, {{.username}}: {{.data}}/1000 },
+						{ y: {{.timestamp}}, {{.username}}: {{.data}} },
 					{{/dayData}}]
 			);
 		});