diff --git a/docs/resources/images/horizontalAxiRollingExample.png b/docs/resources/images/horizontalAxiRollingExample.png
new file mode 100644
index 0000000000000000000000000000000000000000..b5f1dff483e43e6bfc0718f6d6f50c32c0fae312
Binary files /dev/null and b/docs/resources/images/horizontalAxiRollingExample.png differ
diff --git a/docs/resources/images/horizontalAxisRollingExample.png.license b/docs/resources/images/horizontalAxisRollingExample.png.license
new file mode 100644
index 0000000000000000000000000000000000000000..f8c6bf8cd36fb9a9a0a0dd474407f40908bf5d1f
--- /dev/null
+++ b/docs/resources/images/horizontalAxisRollingExample.png.license
@@ -0,0 +1,3 @@
+SPDX-FileCopyrightText: 2021 Helmholtz-Zentrum für Umweltforschung GmbH - UFZ
+
+SPDX-License-Identifier: GPL-3.0-or-later
\ No newline at end of file
diff --git a/saqc/funcs/rolling.py b/saqc/funcs/rolling.py
index 327c32f132e1dee4916ca031fc52f1eab51ec683..de872d506ed8046ae356e00a52805eb026af9ddf 100644
--- a/saqc/funcs/rolling.py
+++ b/saqc/funcs/rolling.py
@@ -64,6 +64,12 @@ class RollingMixin:
 
         center :
             If True, center the rolling window.
+
+        Notes
+        -----
+        .. figure:: /resources/images/horizontalAxisRollingExample.png
+
+           Rolling over multiple variables.
         """
         # HINT: checking in  _roll
         if target and (len(target) > 1) and (len(field) != len(target)):
@@ -145,6 +151,7 @@ class RollingMixin:
 
         center :
             If True, center the rolling window.
+
         """
         import warnings