diff --git a/scripts/jantoran_2.py b/scripts/jantoran_2.py
index ddb4a00..3ca6963 100755
--- a/scripts/jantoran_2.py
+++ b/scripts/jantoran_2.py
@@ -9,6 +9,24 @@ def tool_distri(arr, perc):
     r[str(p)] = arr[round(p * (len(arr) - 1))]
   return r
 
+def compute_dropped(s):
+  s['current']['missing'] = []
+  start = 0
+  state = "BROKEN"
+  for missing_pkt in range(s['current']['npkt']+1):
+    if s['current']['crible'][missing_pkt] and state == 'WORKING':
+      state = 'BROKEN'
+      start = missing_pkt
+    elif (not s['current']['crible'][missing_pkt]) and state == 'BROKEN':
+      state = 'WORKING'
+      s['current']['missing'].append((start, missing_pkt-1,missing_pkt-start))
+
+  if state == 'BROKEN':
+    s['current']['missing'].append((start, s['current']['npkt'], 1+s['current']['npkt']-start))
+
+  print(s['current']['missing'])
+  return True
+
 def compute_failure(s):
   it = (s['current']['strat'], s['current']['mode'])
   if it not in s['failure']: s['failure'][it] = []
@@ -17,7 +35,7 @@ def compute_failure(s):
 
 def extract_measlat(log, s):
   s['current']['max_pkt'] = 0
-  s['current']['lats'] = []
+  s['current']['crible'] = [True] * (s['current']['npkt']+1)
   try:
     with open(log) as f:
       for l in f:
@@ -26,9 +44,10 @@ def extract_measlat(log, s):
           pkt = int(x.groups()[0])
           lat = int(x.groups()[1])
           s['current']['max_pkt'] = max(s['current']['max_pkt'], pkt)
-          #s['current']['lats'].append(lat)
+          if pkt <= s['current']['npkt']: s['current']['crible'][pkt] = False
     return True
-  except:
+  except Exception as e:
+    print("read error", e)
     return False
 
 def extract_info(inf, s):
@@ -56,7 +75,11 @@ def extract_info(inf, s):
     return False
 
 def extract_folder(p, s):
-  return extract_info(p + '/info.txt', s) and extract_measlat(p + '/log/client-measlat-stdout.log', s) and compute_failure(s)
+  return \
+    extract_info(p + '/info.txt', s) and \
+    extract_measlat(p + '/log/client-measlat-stdout.log', s) and \
+    compute_failure(s) and \
+    compute_dropped(s) 
 
 def categorize(folder, s):
   s[folder] = s['current']
@@ -64,6 +87,7 @@ def categorize(folder, s):
   i = (s['current']['strat'], s['current']['mode'])
   if i not in s['per_strat']: s['per_strat'][i] = []
   s['per_strat'][i].append(s['current'])
+  return True
 
 def extract(p, s):
   item_count = functools.reduce(lambda acc, prev: acc + 1, os.listdir(p), 0)
@@ -72,7 +96,9 @@ def extract(p, s):
   print("extracting...")
   for folder in os.listdir(p):
     s['current'] = {}
-    extract_folder(p + '/' + folder, s) and categorize(folder, s)
+    extract_folder(p + '/' + folder, s) and \
+      categorize(folder, s) or \
+      print(f"An error occured with {folder}")
     counter += 1
     progress = round(counter / item_count * 100)
     print(f"{progress}%", end="\r")