Introduced GPT/AI service, added dashboard widgets, drag and drop, export import.

services/gpt_service/METRICS_REFERENCE.md

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+# Environmental Monitoring Standards Reference
+
+This document provides the industry-standard optimal ranges used by the GPT service for environmental analysis.
+
+## Supported Metrics
+
+### Temperature (°C)
+- **Optimal Range**: 18-24°C
+- **Comfort Zone**: 20-22°C
+- **Critical Low**: <15°C
+- **Critical High**: >28°C
+- **Standards**: ASHRAE 55, ISO 7730
+- **Key Concerns**:
+  - Worker comfort and productivity
+  - Equipment operating conditions
+  - Energy efficiency
+  - HVAC system performance
+
+### Humidity (%)
+- **Optimal Range**: 30-60%
+- **Comfort Zone**: 40-50%
+- **Critical Low**: <20%
+- **Critical High**: >70%
+- **Standards**: ASHRAE 55, WHO guidelines
+- **Key Concerns**:
+  - Mold and mildew growth (>60%)
+  - Static electricity and equipment damage (<30%)
+  - Respiratory health and comfort
+  - Material degradation
+
+### CO2 (ppm)
+- **Optimal Range**: 400-1000ppm
+- **Comfort Zone**: 400-800ppm
+- **Critical Low**: <350ppm (unusual indoors)
+- **Critical High**: >1500ppm
+- **Standards**: ASHRAE 62.1, WHO Air Quality Guidelines
+- **Key Concerns**:
+  - Air quality and ventilation effectiveness
+  - Cognitive performance (>1000ppm affects decision-making)
+  - Occupant health and alertness
+  - HVAC system efficiency
+- **Impact**: Studies show 15% decline in cognitive function at 1400ppm
+
+### Atmospheric Pressure (hPa)
+- **Optimal Range**: 1013-1023hPa
+- **Comfort Zone**: 1013-1020hPa
+- **Critical Low**: <980hPa
+- **Critical High**: >1050hPa
+- **Key Concerns**:
+  - Weather changes and ventilation
+  - Building pressurization
+  - Equipment calibration
+  - Occupant comfort
+
+### Light / Illuminance (lux)
+- **Optimal Range**: 300-500 lux
+- **Comfort Zone**: 400-500 lux
+- **Critical Low**: <200 lux
+- **Critical High**: >1000 lux
+- **Standards**: EN 12464-1, IESNA recommendations
+- **Key Concerns**:
+  - Visual comfort and eye strain
+  - Productivity and task performance
+  - Energy consumption
+  - Circadian rhythm regulation
+- **Note**: Higher levels (750-1000 lux) for detailed work
+
+### Noise (dB)
+- **Optimal Range**: 30-50dB
+- **Comfort Zone**: 35-45dB
+- **Critical Low**: <20dB (unusual indoors)
+- **Critical High**: >70dB
+- **Standards**: WHO Noise Guidelines, OSHA
+- **Key Concerns**:
+  - Acoustic comfort and concentration
+  - Speech intelligibility
+  - Stress and productivity impact
+  - Hearing protection requirements (>85dB)
+- **Impact**: 40-45dB ideal for office work, <35dB for focused tasks
+
+### PM2.5 - Fine Particulate Matter (µg/m³)
+- **Optimal Range**: 0-12 µg/m³
+- **Comfort Zone**: 0-10 µg/m³
+- **Critical Low**: 0 µg/m³ (best)
+- **Critical High**: >35 µg/m³
+- **Standards**: EPA Air Quality Index, WHO guidelines
+- **Key Concerns**:
+  - Air quality and health risk
+  - Respiratory system impact
+  - Filter maintenance requirements
+  - Outdoor air quality correlation
+- **Impact**: >35 µg/m³ = Unhealthy for sensitive groups
+
+### VOC - Volatile Organic Compounds (ppb)
+- **Optimal Range**: 0-220ppb
+- **Comfort Zone**: 0-150ppb
+- **Critical Low**: 0ppb (best)
+- **Critical High**: >500ppb
+- **Standards**: Various indoor air quality standards
+- **Key Concerns**:
+  - Indoor air quality
+  - Off-gassing from materials
+  - Ventilation effectiveness
+  - Occupant health symptoms (headaches, irritation)
+
+## Analysis Approach
+
+The GPT service uses these standards to:
+
+1. **Assess Current Conditions**: Compare measurements against optimal ranges
+2. **Identify Issues**: Flag deviations with severity levels
+3. **Provide Context**: Explain health/productivity impacts
+4. **Recommend Actions**: Suggest specific interventions (HVAC, ventilation, etc.)
+5. **Predict Trends**: Forecast potential issues based on patterns
+
+## Multi-Metric Correlation
+
+When analyzing multiple metrics together, the service looks for:
+- **HVAC Performance**: Temperature + Humidity + CO2 trends
+- **Ventilation Effectiveness**: CO2 + PM2.5 + VOC levels
+- **Occupancy Impact**: CO2 rise + Temperature increase + Humidity changes
+- **Seasonal Patterns**: Pressure + Temperature + Humidity correlations
+
+## References
+
+- ASHRAE Standard 55: Thermal Environmental Conditions for Human Occupancy
+- ASHRAE Standard 62.1: Ventilation for Acceptable Indoor Air Quality
+- WHO Air Quality Guidelines
+- ISO 7730: Ergonomics of the thermal environment
+- EN 12464-1: Light and lighting of work places
+- EPA Air Quality Index
+- OSHA Occupational Noise Exposure Standards
+
+## Usage in Prompts
+
+The service automatically includes relevant standards in analysis prompts based on detected metrics. No manual configuration needed - just send your telemetry data!