diff --git a/DataGuide_AAPF_HSI.md b/DataGuide_AAPF_HSI.md
index 3bf2e9e..15d4dc9 100644
--- a/DataGuide_AAPF_HSI.md
+++ b/DataGuide_AAPF_HSI.md
@@ -62,6 +62,35 @@ This document details the file system organization and navigation procedures for
     - `Compressed Vegetation Index Images (.zip, under VI_images directory)`: This section houses compressed image files for various types of vegetation indices calculated from the HSI data.
 
 
+### How to Read Information in Header Summary (header_summary_plants.csv, header_summary_ref.csv)
+
+| Column Head          | Description                                           |
+|----------------------|-------------------------------------------------------|
+| `header path`        | File path to the header file                          |
+| `camera model`       | Camera mode                                           |
+| `serial number`      | Serial number of the camera                           |
+| `roi left`           | Parameter not relevant to vegetation segments         |
+| `roi top`            | Parameter not relevant to vegetation segments         |
+| `roi width`          | Parameter not relevant to vegetation segments         |
+| `roi height`         | Parameter not relevant to vegetation segments         |
+| `samples`            | Width of data cube (conveyer belt direction)          |
+| `bands`              | Number of spectral channels                           |
+| `lines`              | Number of scanslines from top to bottom               |
+| `scanStartTime`      | Scan start time                                       |
+| `scanEndTime`        | Scan end time                                         |
+| `Wavelength`         | List of central wavelengths for each channel (separated by "|")         |
+| `fwhm`               | Full wavelength at half maximum (width of wavelengths, separated by "|" |
+| `PlantID`||
+| `CarrierID`||
+| `PlantHeight`||
+| `PlantWidth`||
+| `LotID`||
+| `CameraPosition`||
+| `illumination`||
+| `scandir` ||
+| `scan_order`||
+| `dark white`||
+
 
 
 
@@ -71,7 +100,7 @@ This document details the file system organization and navigation procedures for
 
 
 
-### How to Read Information in Header Summary (header_summary_plants.csv, header_summary_ref.csv)
+
 
 
 ### How to Read Information in Spreadsheet file (.xlsx, masterfile)