diff --git a/DataGuide_AAPF_RGB.md b/DataGuide_AAPF_RGB.md
index b15b006..d14a54c 100644
--- a/DataGuide_AAPF_RGB.md
+++ b/DataGuide_AAPF_RGB.md
@@ -83,7 +83,7 @@ These image files visually represent morphological measurements on the vegetatio
 
 ### How to Read Information in spreadsheet files (.xlsx for masterfile or csv file for individual measurements)
 
-The spreadsheets contains various phenotypic measurements derived from the RGB images. Here's a breakdown of the column headers:
+The spreadsheets contains various phenotypic measurements derived from the RGB images and auxiliary measurement info. Here's a breakdown of the column headers:
 
 - `frame_nr`
     - Frame number from 0-11 for side view data