Update README_RGB.md

README_RGB.md

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 # DataGuide-AAPF-RGB
 
+This document details the file system organization and navigation procedures for accessing both unprocessed RGB image data and the derived phenotypic measurements of the plants captured by the [Ag Alumni Seed Phenotyping Facility (AAPF)](https://ag.purdue.edu/aapf/).
+
 
-This document utilizes phenotypic data derived from raw RGB images captured by the [Ag Alumni Seed Phenotyping Facility (AAPF)](https://ag.purdue.edu/aapf/). The data is available in two formats:
 
 - Masterfile (.xlsx): This file contains a compilation of spreadsheets and a guide document explaining the data contents.
 - Raw Measurement Data: This folder structure houses individual spreadsheets (.csv) and corresponding images (.png) for each measured phenotype.