diff --git a/code/parse_copenhagen.py b/code/parse_copenhagen.py
index 6d27cb7..d5aaaaf 100644
--- a/code/parse_copenhagen.py
+++ b/code/parse_copenhagen.py
@@ -30,9 +30,11 @@ rssi = 3
 
 
 def main(args):
-  # Get contacts [tim, uid_a, uid_b] from previous parsing
-  cont = lmdk_lib.load_data(args, 'cont')
-  if cont.size == 0:
+  # Get contacts from previous parsing
+  cont_data = lmdk_lib.load_data(args, 'cont')
+  if cont_data.size == 0:
+    # Contacts [tim, uid_a, uid_b, rssi]
+    cont = []
     try:
       print('Extracting %s... ' %(os.path.abspath(args.arc)), end='', flush=True)
       with zipfile.ZipFile(args.arc, 'r') as arc:
@@ -46,14 +48,14 @@ def main(args):
             for c in cont_l:
               if c[uid_b] != '-1' and c[rssi] != '0' and c[uid_b] != '-2' and c[uid_a] != c[uid_b]:
                 # Add valid contact
-                cont.append([c[tim], c[uid_a], c[uid_b]])
+                cont.append([c[tim], c[uid_a], c[uid_b], c[rssi]])
             print('[OK]')
           except Exception as e:
             print('[Error: %s]' %(e))
     except Exception as e:
       print('[Error: %s]' %(e))
     # Save to results
-    lmdk_lib.save_data(args, np.array(cont), 'cont')
+    lmdk_lib.save_data(args, np.array(cont, np.float32), 'cont')
 
 
 '''