diff --git a/mdf4reader.py b/mdf4reader.py
index b3b3b3d..6a11b36 100644
--- a/mdf4reader.py
+++ b/mdf4reader.py
@@ -994,7 +994,6 @@ def read4( self, fileName=None, info = None, multiProc = False, channelList=None
                 p.join()
             del Q # free memory
 
-        fid.close() # close file
         # After all processing of channels,
         # prepare final class data with all its keys
         for dataGroup in list(info['DGBlock'].keys()):
@@ -1066,8 +1065,8 @@ def read4( self, fileName=None, info = None, multiProc = False, channelList=None
                                 self[name]['masterType']=info['CNBlock'][dataGroup][channelGroup][channel]['cn_sync_type']
                                 if masterDataGroup: #master channel exist
                                     self.masterChannelList[masterDataGroup[dataGroup]].append(name)
-            
-        
+
+        fid.close() # close file
         
         if convertAfterRead: 
             self.convertAllChannel4()
@@ -1379,13 +1378,19 @@ def convertChannelData4(channel, channelName, convert_tables, multiProc=False, Q
     ----------------
     channelName : dict
         channel dict containing keys like 'data', 'unit', 'comment' and potentially 'conversion' dict
+    channelName : str
+        name of channel
     convert_tables : bool
         activates computation intensive loops for conversion with tables. Default is False
+    multiProc : bool, default False
+        flag to put data in multiprocess queue
+    Q : Queue class, default None
+        Queue used for multiprocessing
     
     Returns
     -----------
-    numpy array
-        returns numpy array converted to physical values according to conversion type
+    dict
+        returns dict with channelName key containing numpy array converted to physical values according to conversion type
     """
     vect = channel['data']
     if 'conversion' in channel: # there is conversion property
diff --git a/mdfreader.pdf b/mdfreader.pdf
index 2324baf..8262f21 100644
Binary files a/mdfreader.pdf and b/mdfreader.pdf differ
diff --git a/setup.py b/setup.py
index 93b46e7..c083e96 100644
--- a/setup.py
+++ b/setup.py
@@ -14,7 +14,7 @@
     # Versions should comply with PEP440.  For a discussion on single-sourcing
     # the version across setup.py and the project code, see
     # https://packaging.python.org/en/latest/development.html#single-sourcing-the-version
-    version='0.0.',
+    version='0.0.3',
 
     description='A Measured Data Format file parser',
     long_description=long_description,