GRB ATR is a lightweight volatility indicator built to help traders evaluate changing market conditions using Average True Range (ATR) and ATR Relative Volume (ATR RVOL).

The indicator offers two calculation modes:

• ATR Mode
Displays standard Average True Range to measure raw volatility.

• ATR RVOL Mode
Compares current ATR against historical ATR averages to highlight whether volatility is lower, normal, or elevated relative to recent conditions.

Color Classification:
• Low Volatility → Reduced market activity
• Normal Volatility → Balanced conditions
• High Volatility → Increased participation and expansion

Features:
• Standard ATR calculation
• ATR Relative Volume (ATR RVOL) mode
• Automatic volatility classification
• Color-coded histogram output
• Adjustable ATR and RVOL periods
• Lightweight and responsive design

Best For:
• Intraday Trading
• Session Analysis
• Volatility Context
• Breakout Evaluation
• Auction-Based Trading Workflows

GRB ATR is designed to provide fast volatility context without adding unnecessary chart clutter.