diff --git a/plot_single_transmission_paper.py b/plot_single_transmission_paper.py
index 3eed4cb..5c70d81 100755
--- a/plot_single_transmission_paper.py
+++ b/plot_single_transmission_paper.py
@@ -128,7 +128,7 @@ if __name__ == "__main__":
         serial_df = serial_df.loc[mask]
 
         serial_df["arrival_time"] = serial_df["time"] - serial_df["time"].iloc[0]
-        serial_df.index = serial_df["arrival_time"] / 60
+        serial_df.index = serial_df["arrival_time"]
 
         transmission_df.index = transmission_df["arrival_time"]
 
@@ -211,7 +211,7 @@ if __name__ == "__main__":
         ax00.set_ylabel("bandwidth [MHz]")
         #ax.set_xlabel("time [minutes]")
         #ax00.set_xlim([0, transmission_df.index[-1]])
-        ax00.xaxis.grid(False)
+        ax00.xaxis.grid(True)