diff --git a/plot_transmission_timeline.py b/plot_transmission_timeline.py
index 1c8c3c3..80c77ee 100755
--- a/plot_transmission_timeline.py
+++ b/plot_transmission_timeline.py
@@ -263,7 +263,7 @@ if __name__ == "__main__":
 
     # rtt cdf
     plt.clf()
-
+    print(transmission_df["ack_rtt"])
     print("Calculate and polt rtt CDF...")
     plot_cdf(transmission_df, "ack_rtt")
     plt.xlabel("ACK RTT [s]")