diff --git a/dataFilter.py b/dataFilter.py
index 2418f504f82533491d93bfa3cd7daaeac64e0e49..1653a760bd9067696dd26b1a857f6398c6b10d24 100755
--- a/dataFilter.py
+++ b/dataFilter.py
@@ -12,8 +12,9 @@
 #	print more info: 
 #		nLines before coolOff
 #		nLines after coolOff
-#		nLines after cutOff (total nDel lines)
 #
+# 	compat /w ecoTrack ? 1nt3gr4t3.
+
 import sys, os
 
 cutOff=True
@@ -25,6 +26,7 @@ COL_Y=COL_X+1
 COL_TAG=COL_Y+1
 DELIM=","
 
+OMIT_COL_BEGIN=4 #omit ts,ms,date,time
 OUT_COL_X=5
 OUT_COL_Y=OUT_COL_X+1
 OUT_COL_TAG=OUT_COL_Y+1
@@ -39,8 +41,8 @@ def squash(data):
 	for line in data:
 		if line[0] == '#':
 			if line.startswith("#timestamp"):
-				HEADER = line
-				filtered += HEADER
+				header="#begin, end, dur," + DELIM.join(line.split(',')[OMIT_COL_BEGIN:])
+				filtered.append(header)
 			continue
 
 		l = line.split(DELIM)
@@ -58,7 +60,6 @@ def squash(data):
 			recentBeetle=recent[i][OUT_COL_TAG] == tag
 			fastBeetle = not samePos and recentBeetle
 			ago = timestamp - recent[i][1]
-
 			if ago > coolOff or fastBeetle:
 				
 				## add new squashed / trackevent
@@ -80,15 +81,17 @@ def squash(data):
 		if not tagFound:
 
 			## add recent
-			recent.append([timestamp,timestamp,0]+l[4:]) #omit ts,ms,date,time
+			recent.append([timestamp,timestamp,0]+l[OMIT_COL_BEGIN:])
 
-	## cutOff
 	ncut = 0
 	for r in recent:
+	
+		## cutOff
 		if cutOff:
 			r[1] = r[0]
 			ncut += r[2]
 			r[2] = 0
+			
 		filtered.append(DELIM.join(map(str,r)))
 
 	if cutOff:
@@ -111,9 +114,7 @@ def main(filename):
 	with open(filename) as f:
 		data = f.readlines()
 
-	print(len(data))
 	data = squash( data )
-	print(len(data))
 
 	write(filename + "-filtered", data)