diff --git a/tools/powertrace/Makefile.powertrace b/tools/powertrace/Makefile.powertrace
index 712151bac..22aa63dcc 100644
--- a/tools/powertrace/Makefile.powertrace
+++ b/tools/powertrace/Makefile.powertrace
@@ -8,8 +8,14 @@ powertrace-parse:
 	@echo LOG must be defined to point to the powertrace log file to parse
 endif #LOG
 
-powertrace-plot:
-	gnuplot $(CONTIKI)/tools/powertrace/plot-power || echo gnupot failed
+powertrace-plot: powertrace-plot-node powertrace-plot-sniff
+	@gnuplot $(CONTIKI)/tools/powertrace/plot-power || echo gnupot failed
+
+powertrace-plot-sniff:
+	@gnuplot $(CONTIKI)/tools/powertrace/plot-sniff-power || echo gnupot failed
+
+powertrace-plot-node:
+	@gnuplot $(CONTIKI)/tools/powertrace/plot-node-power || echo gnupot failed
 
 powertrace-show:
 	gv powertrace-power.eps
diff --git a/tools/powertrace/parse-sniff-data b/tools/powertrace/parse-sniff-data
index 0c0731272..45e696c6a 100755
--- a/tools/powertrace/parse-sniff-data
+++ b/tools/powertrace/parse-sniff-data
@@ -22,7 +22,8 @@ while(<>) {
         if($packettype == 1) {
             $channel .= "-ack"
         } 
-        
+
+        $num_packets_for_channel{$channel}++;
         $tx_for_channel{$channel} += $tx;
         $rx_for_channel{$channel} += $rx;
         $total += $rx + $tx;
@@ -36,8 +37,11 @@ while(<>) {
     }
 }
 
+print "# Columns are:\n";
+print "# activity tx_dutycycle rx_dutycycle num_packets\n";
+
 foreach $c (keys %tx_for_channel) {
-    print "$c " . $tx_for_channel{$c}/$total . " " . $rx_for_channel{$c}/$total . "\n";
+    print "$c " . $tx_for_channel{$c}/$total . " " . $rx_for_channel{$c}/$total . " " . $num_packets_for_channel{$c} . "\n";
 }
 
 print STDERR "Final / forward = " . $final / $total . "/" . $forward / $total . "\n";