From f2329d218e73c65f1903c96183652647f88d5237 Mon Sep 17 00:00:00 2001
From: Peter Luenenschloss <peter.luenenschloss@ufz.de>
Date: Sat, 23 Jan 2021 11:03:03 +0100
Subject: [PATCH] vorzeichenfehler

---
 saqc/funcs/rolling.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/saqc/funcs/rolling.py b/saqc/funcs/rolling.py
index e0986ddc7..390805af2 100644
--- a/saqc/funcs/rolling.py
+++ b/saqc/funcs/rolling.py
@@ -103,7 +103,7 @@ def roll(data, field, flagger, winsz, func=np.mean, eval_flags=True, min_periods
             means = to_fit.rolling(window=winsz, center=center, closed="both").apply(func)
 
     if _return_residues:
-        means = means - to_fit
+        means = to_fit - means
 
     data[field] = means
     if eval_flags:
-- 
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