diff --git a/DataGuide_AAPF_HSI.md b/DataGuide_AAPF_HSI.md
index 92d7180..6d618bf 100644
--- a/DataGuide_AAPF_HSI.md
+++ b/DataGuide_AAPF_HSI.md
@@ -8,12 +8,12 @@ This document details the file system organization and navigation procedures for
 
 ## Table of Contents
 
-### [File system structure](#file-system-structure)
-#### Raw Scanned Data
-#### Interim Data Product & Masterfile
-### How to Read Information in Header Summary (header_summary_plants.csv, header_summary_ref.csv)
-### Interpretation of Animated GIF Files for VNIR-SWIR Coregistration Quality Assessment
-### How to Read Information in Spreadsheet file (.xlsx, masterfile)
+[File system structure](#file-system-structure)
+[Raw Scanned Data](raw-scanned-data)
+[Interim Data Product & Masterfile (.xlsx)]](#interim-data-product--masterfile)
+[How to Read Header Summary (header_summary_plants.csv, header_summary_ref.csv)](#how-to-read-information-in-header-summary-header_summary_plantscsv-header_summary_refcsv)
+[Interpretation of VNIR-SWIR Coregistration Quality Assessment (.gif)](#interpretation-of-animated-gif-files-for-vnir-swir-coregistration-quality-assessment)
+[How to Read Information in Spreadsheet file (.xlsx, masterfile)](#how-to-read-information-in-spreadsheet-file-xlsx-masterfile)
 
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