diff --git a/plot_transmission_timeline.py b/plot_transmission_timeline.py
index d360374..b8246f9 100755
--- a/plot_transmission_timeline.py
+++ b/plot_transmission_timeline.py
@@ -134,6 +134,8 @@ if __name__ == "__main__":
         lambda x: ((x * 8) / args.interval) / 10**6
     )
 
+    # remove all not needed columns
+    transmission_df = transmission_df.filter(["goodput", "datetime"])
 
     # read serial csv
     serial_df = pd.read_csv(args.serial_file)