diff --git a/DataGuide_AAPF_HSI.md b/DataGuide_AAPF_HSI.md
index d09c0db..6f7e542 100644
--- a/DataGuide_AAPF_HSI.md
+++ b/DataGuide_AAPF_HSI.md
@@ -12,6 +12,7 @@ This document details the file system organization and navigation procedures for
     - [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)
+- [How to Read Hyperspectral Data Processing Summary (.csv)]()
 - [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-masterfile-file-xlsx-spreadsheet)
 ___
@@ -103,6 +104,36 @@ The definition of column headers and corresponding values mostly originates from
 | `scan_order`         | The 'Scan order' column assigns a unique integer value to each scan incrementally based on the order of image capture during the experiment within the AAPF. This value is identical for all cameras (VNIR-SIDE, VNIR-TOP, SWIR-SIDE, and SWIR-TOP) operating concurrently during a single scanning session, which captures data for the same plant on the same day |
 | `dark white`         | "Dark" or "White", only available for `header_summary_ref.csv`                                  |
 
+
+### How to Read Hyperspectral Data Processing Summary (.csv)
+
+This table provides a concise overview of the data processing steps applied concurrently to each HSI acquisition session, encompassing output data products from VNIR-SIDE, VNIR-TOP, SWIR-SIDE, and SWIR-TOP sensors. A detailed explanation of each column header follows:
+
+| Column Head          | Description                                                                                     |
+|----------------------|-------------------------------------------------------------------------------------------------|
+| `scan_order`         | This column references the same `scan_order` defined in the [Header Summary](#how-to-read-information-in-header-summary-header_summary_plantscsv-header_summary_refcsv) section. |
+| `LotID`              | This column references the same `LotID` code defined in the [Header Summary](#how-to-read-information-in-header-summary-header_summary_plantscsv-header_summary_refcsv) section. |
+| `VNIR-SIDE`<br>`VNIR-TOP`<br>`SWIR-SIDE`<br>`SWIR-TOP` | These columns specify the corresponding header filenames for each sensor and view combination (SIDE or TOP) based on the designated scan order |
+| `step1`              | This column outlines the processing strategy employed for side-view data (SIDE). When both VNIR and SWIR data are available, the strategy is `Combine SIDE`, involving coregistration of VNIR and SWIR data during processing. If only VNIR data exists, the strategy is `Use VNIR-SIDE`, where coregistration is not performed, and all data extraction relies solely on VNIR data. In the absence of VNIR data or both VNIR and SWIR data, the strategy is denoted as `Pass`. |
+| `step2`              | This column mirrors the processing strategy descriptions in `step1`, but specifically for top-down view data (TOP). Values in this column directly correspond to those in `step1`, simply replacing "SIDE" with "TOP" to reflect the view orientation. |
+
+
+This table brieflly describe overall data processing steps for each HSI data concurrently collected (means each scan session with output data product from VNIR-SIDE, VNIR-TOP, SWIR-SIDE, and SIWR-TOP). Here's description of each column header:
+
+- scan_order: Same as in Header Summary
+- LotID: Same as in Header Summary
+- VNIR-SIDE: Header filename of VNIR-SIDE data corresponds to the scan_order
+- VNIR-TOP: Header filename of VNIR-TOP data corresponds to the scan_order
+- SWIR-SIDE: Header filename of SWIR-SIDE data corresponds to the scan_order
+- SWIR-TOP: Header filename of SWIR-TOP data corresponds to the scan_order
+- step1: Short description of processing strategy for side view data. When both VNIR and SWIR data are available, it is "Combine SIDE". In this case VNIR and SWIR coregistration is performed during the process. When only VNIR data exists, it is "Use VNIR-SIDE". in this case, coregistration is not performed and all the data extractionis performed using VNIR data. When only SWIR data exists or none of VNIR, and SWIR data exists, it is "Pass".
+- step2: Short description of processing strategy for top-down view data. Basically values in this column is similar to the ones for step1 column with SIDE replaced by TOP.
+
+
+
+
+
+
 ### Interpretation of Animated GIF Files for VNIR-SWIR Coregistration Quality Assessment