Fix noise anomalies

config_maker/anomalies/noise.py

@@ -16,7 +16,7 @@ class NoiseAnomaly(BaseAnomaly):
         return {
             "kind": "NOISE",
             "mean": np.random.uniform(low=-0.1, high=0.1),
-            "std": np.random.uniform(low=-0.01, high=0.1),
+            "std": np.random.uniform(low=0.01, high=0.1),
             "length": int(self.length),
             "position": np.random.choice(["start", "middle", "end"])
         }