diff --git a/plot_transmission_timeline.py b/plot_transmission_timeline.py
index 7935ea0..036e8fc 100755
--- a/plot_transmission_timeline.py
+++ b/plot_transmission_timeline.py
@@ -53,13 +53,13 @@ def plot_cdf(dataframe, column_name):
         .rename(columns={column_name: "frequency"})
 
     # PDF
-    stats_df["pdf"] = stats_df["frequency"] / sum(stats_df["frequency"])
+    stats_df["PDF"] = stats_df["frequency"] / sum(stats_df["frequency"])
 
     # CDF
-    stats_df["cdf"] = stats_df["pdf"].cumsum()
+    stats_df["CDF"] = stats_df["PDF"].cumsum()
     stats_df = stats_df.reset_index()
 
-    stats_df.plot(x=column_name, y=["cdf"], grid=True)
+    stats_df.plot(x=column_name, y=["CDF"], grid=True)
 
 
 if __name__ == "__main__":
@@ -217,6 +217,8 @@ if __name__ == "__main__":
 
     print("Calculate and polt CDF...")
     plot_cdf(transmission_df, "goodput")
+    plt.xlabel("goodput [mbps]")
+    plt.ylabel("CDF")
 
     if args.save:
         plt.savefig("{}{}_cdf_plot.pdf".format(args.save, "goodput"))