Normalised ATR - Configurable Session Volatility Analysis

This indicator analyzes price volatility across different trading sessions throughout the day. Here are its key features:

1. **Configurable Time Periods**
- Users can set specific date ranges for analysis
- Supports up to 12 customizable trading sessions
- Adjustable session durations (1-8 hours each)

2. **Volatility Measurements**
- Offers two calculation methods:
* Normalized Range: (High-Low)/Midpoint Price × 100 (as percentage)
* Absolute Range: Simple High-Low difference
- Tracks key statistics for each session:
* Maximum range
* Minimum range
* Average range
* 25% quartile range

3. **Statistical Analysis**
- Calculates 5th and 95th percentiles across all sessions
- Provides visual reference lines for these percentiles
- Shows detailed statistics in a color-coded table

4. **Visual Display**
- Clear tabular display of session statistics
- Color-coded for easy reading
- Plot of daily ranges with percentile bounds
- Session times displayed in UTC

This tool is particularly useful for:
- Understanding market volatility patterns across different trading sessions
- Identifying optimal trading hours
- Planning trading strategies based on historical volatility patterns
- Comparing volatility across different market periods