diff --git a/main.py b/main.py
index 62adc2b..2ec4a6c 100644
--- a/main.py
+++ b/main.py
@@ -10,7 +10,7 @@ from scipy.stats import norm
 
 def train(data):
     D = pd.DataFrame(data)
-    sd = np.array([1.0, 0.25, 0.5, 0.1])
+    sd = np.array([1.0, 0.5, 0.2, 0.5])
     D["qoi"] = D["obs"].apply(lambda o: np.sum(o, axis=0) / sd / np.sqrt(len(o)))
     D["i"] = D["lam"].apply(lambda l: norm.pdf(l).prod())
     D["o"] = D["qoi"].apply(lambda q: norm.pdf(q).prod())