diff --git a/uebung_03/exercise_04/exercise_04_visualization.py b/uebung_03/exercise_04/exercise_04_visualization.py
index cbe6e1f..5e58400 100644
--- a/uebung_03/exercise_04/exercise_04_visualization.py
+++ b/uebung_03/exercise_04/exercise_04_visualization.py
@@ -3,7 +3,7 @@ import matplotlib.pyplot as plt
 import timeit
 
 nthreads = [1, 2, 4, 8, 16]
-sizes = [100, 400, 1600, 6400, 12800, 256000, 512000]
+sizes = [100, 400, 1600, 6400, 12800, 25600, 51200]
 
 thread_timings = [] 
 for t in nthreads:
diff --git a/uebung_03/exercise_04/visualization.png b/uebung_03/exercise_04/visualization.png
new file mode 100644
index 0000000..2d054fd
Binary files /dev/null and b/uebung_03/exercise_04/visualization.png differ