diff --git a/main.py b/main.py
old mode 100644
new mode 100755
index d56dcd7..9ab7de4
--- a/main.py
+++ b/main.py
@@ -58,7 +58,7 @@ def generate_data(matrix_path, epsilon, alpha_values):
     diff_norms = []
 
     for alpha in alpha_values:
-        print(f"Running for alpha={alpha:.3f}")
+        print(f"Running for alpha={alpha:.6f}")
         data = run_pagerank(matrix_path, epsilon, alpha)
         if data:
             pagerank_iterations.append(data["pagerank_iterations"])
@@ -67,7 +67,7 @@ def generate_data(matrix_path, epsilon, alpha_values):
             gauss_seidel_times.append(data["gauss_seidel_time"])
             diff_norms.append(data["diff_norm"])
         else:
-            print(f"Skipping alpha={alpha:.3f} due to error")
+            print(f"Skipping alpha={alpha:.6f} due to error")
             pagerank_iterations.append(None)
             gauss_seidel_iterations.append(None)
             pagerank_times.append(None)
@@ -111,11 +111,12 @@ def plot_curves(alpha_values, pagerank_iterations, gauss_seidel_iterations, page
 def main():
     parser = argparse.ArgumentParser(description='Pagerank vs Gauß Seidel execution time depending on α')
     parser.add_argument('--alpha', type=int, default=10, help='number of alpha to test in the range (0,1)')
+    parser.add_argument('--max_alpha', type=float, default=1, help='stay strictly below this alpha')
     parser.add_argument('--epsilon', type=float, default=1e-7, help='epsilon value for the convergence')
     parser.add_argument('--matrix', type=str, default="out/input.mtx", help='path to the matrix file')
     args = parser.parse_args()
 
-    alpha_values = np.arange(0, 1, (1/args.alpha))
+    alpha_values = np.arange(0, args.max_alpha, (1/args.alpha))
 
     (pagerank_iterations, gauss_seidel_iterations, pagerank_times, gauss_seidel_times, diff_norms) = generate_data(args.matrix, args.epsilon, alpha_values)
     plot_curves(alpha_values, pagerank_iterations, gauss_seidel_iterations, pagerank_times, gauss_seidel_times, diff_norms)