diff --git a/DataGuide_AAPF_HSI.md b/DataGuide_AAPF_HSI.md
index e181149..bfb69d6 100644
--- a/DataGuide_AAPF_HSI.md
+++ b/DataGuide_AAPF_HSI.md
@@ -98,10 +98,10 @@ The definition of column headers and corresponding values mostly originates from
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### How to Read Information in Spreadsheet file (.xlsx, masterfile)