From 92765b5665d0c57b90499f4eadca203215224c3e Mon Sep 17 00:00:00 2001
From: Ivan Usov <ivan.usov@psi.ch>
Date: Mon, 22 Nov 2021 14:23:50 +0100
Subject: [PATCH] Fix error calculation when merging data

Fix #46
---
 pyzebra/ccl_process.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pyzebra/ccl_process.py b/pyzebra/ccl_process.py
index 7867e86..8e94e8d 100644
--- a/pyzebra/ccl_process.py
+++ b/pyzebra/ccl_process.py
@@ -131,7 +131,7 @@ def merge_scans(scan_into, scan_from):
 
     scan_into[scan_motor] = pos_tmp
     scan_into["counts"] = val_tmp / num_tmp
-    scan_into["counts_err"] = np.sqrt(err_tmp)
+    scan_into["counts_err"] = np.sqrt(err_tmp) / num_tmp
 
     scan_from["export"] = False