diff --git a/main.py b/main.py
index 3c32127..77fb95d 100644
--- a/main.py
+++ b/main.py
@@ -73,10 +73,15 @@ if __name__ == '__main__':
     print("index:")
     print(data.index)
 
+    data = data.drop('Volume', axis=1, level=0)  # drop Volume data
     print(data)
+    print(data.keys())
+    print(data.iloc[0])
 
     print(get_day_x_delta_data(data, 1, True))
-    print(get_day_x_delta_data(data, 1))
+    d1 = get_day_x_delta_data(data, 1)
+    print(d1.corr())
+
     exit()
     print(data.isnull().sum() / data.shape[0] * 100)