Steps to plot:
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1. cd ra1_mon

Run the following command with the year and three letter month (lower case).
2. ./x_plot_ra1_mon.sh 2020 aug 

3. Makes plots for the following variables:
 hgt500 hgt200 rhum850 rhum700 uv200 uv500 uv700 uv850 uv925 mslp

Creates separate directories for different month(s) specified. It can plot 14 ipast monthly or 12 past 3-month seasona.

Data Sourse: NCEP/NCAR (NCEP/DOE) Reanalyses I

Note: Please note that these are sample generic plots. You can modify them as per your need.