diff --git a/skais/ais/ais_points.py b/skais/ais/ais_points.py
index 27b18f2cb6fb2eba754d2ee4766f6ecbe68c6261..e76b2a446da10a63b47a93bccfaf46766d448195 100644
--- a/skais/ais/ais_points.py
+++ b/skais/ais/ais_points.py
@@ -50,18 +50,20 @@ class AISPoints:
 
         self.df = df
 
-    @staticmethod
-    def load_from_csv(file_name):
-        df = pd.read_csv(file_name)
-        ais_points = AISPoints(df)
-        return ais_points
-
+    # cleaning functions
     def remove_outliers(self, features, rank=4):
         if rank <= 0:
             raise ValueError(f"Rank is equal to {rank}, must be positive and superior to 0")
         for feature in features:
             self.df = self.df.drop(self.df[(np.abs(stats.zscore(self.df[feature])) > rank)].index)
 
+    def clean_angles(self):
+        self.df = self.df[self.df["cog"] <= 360]
+        self.df = self.df[self.df["cog"] >= 0]
+
+        self.df = self.df[self.df["heading"] <= 360]
+        self.df = self.df[self.df["heading"] >= 0]
+
     def normalize(self, features, normalization_type="min-max"):
         normalization_dict = {}
         if normalization_type == "min-max":
@@ -93,20 +95,12 @@ class AISPoints:
                              f"standardization]")
         return normalization_type, normalization_dict
 
+    # New features
     # TODO: rename
     def compute_diff_heading_cog(self):
         self.df["diff"] = self.df.apply(lambda x: 180 - abs(abs(x['heading'] - x['cog']) - 180),
                                         axis=1)
 
-    def clean_angles(self):
-        self.df = self.df[self.df["cog"] <= 360]
-        self.df = self.df[self.df["cog"] >= 0]
-
-        self.df = self.df[self.df["heading"] <= 360]
-        self.df = self.df[self.df["heading"] >= 0]
-
-
-
 
     # TODO: redo
     def get_trajectories(self, time_gap=30, min_size=50, interpolation_time=None):
@@ -139,6 +133,7 @@ class AISPoints:
 
         return stats
 
+    # Static methods
     @staticmethod
     def fuse(*args):
         if len(args) == 1:
@@ -153,3 +148,9 @@ class AISPoints:
             dfs.append(aisPosition.df)
 
         return AISPoints(pd.concat(dfs).reindex())
+
+    @staticmethod
+    def load_from_csv(file_name):
+        df = pd.read_csv(file_name)
+        ais_points = AISPoints(df)
+        return ais_points
\ No newline at end of file