VAAYU Lite — Atmospheric Observatory NCR • National Ambient Air Quality Standard Computation Node
STATUS: {{system_status}} • NODE REV: {{build_id}}
sensors
VAAYU LITE — ATMOSPHERIC OBSERVATORY NCR
calculate CPCB 2014 SUB-INDEX CALCULATOR & PIECEWISE LINEAR ENGINE

AQI Calculator

Piecewise linear sub-index interpolation engine conforming to CPCB National Air Quality Index standards with real-time unit self-test verification. Computes regulatory AQI from ambient pollutant vectors.

RUNTIME TEST MATRIX self-test: {{passing_tests}}/{{total_tests}} passing
[VERIFIED AGAINST CPCB BENCHMARK]
Breakpoints: {{breakpoints_verified_status}} • Hash: {{engine_hash}}
tune

POLLUTANT CONCENTRATION VECTOR INPUT (24-H MEAN)

TIER 1 QA/QC
Range: {{pm25_min}} – {{pm25_max}} µg/m³
C_PM2.5 = µg/m³

Micrograms per cubic metre measured via beta-attenuation reference monitor.

Range: {{pm10_min}} – {{pm10_max}} µg/m³
C_PM10 = µg/m³

Inhalable coarse particles concentration evaluated over synchronized 24-hr epoch.

science GOVERNING PIECEWISE LINEAR FORMULATION CPCB GUIDELINE EQ. 4.1
I = I_low + [ (I_high - I_low) / (C_high - C_low) ] × (C - C_low)
C: observed concentration (24h)
[C_low, C_high]: breakpoint concentration interval
[I_low, I_high]: sub-index AQI category interval
Final AQI: max(I_PM2.5, I_PM10, ...)
COMPUTED REGULATORY INDEX CPCB SPECIFICATION STANDARD
{{category_name}}
AIR QUALITY INDEX (AQI)
{{aqi_result}} / {{scale_max}} scale
Critical Determinant
warning Critical Pollutant: {{critical_pollutant}}
health_and_safety
Official Health Advisory: {{health_statement}}
SUB-INDEX ANALYTICAL BREAKDOWN {{pollutant_count}}-POLLUTANT SYNCHRONIZATION
PM2.5 Sub-Index (I_PM2.5) {{pm25_sub_index}}
Linear trace: [{{pm25_bp_low}}, {{pm25_bp_high}}] → [{{i_low}}, {{i_high}}]
Audited Hours: {{pm25_valid_hours}} / {{required_hours}}h
PM10 Sub-Index (I_PM10) {{pm10_sub_index}}
Linear trace: [{{pm10_bp_low}}, {{pm10_bp_high}}] → [{{i_low}}, {{i_high}}]
Audited Hours: {{pm10_valid_hours}} / {{required_hours}}h
Max Sub-Index aggregation rule: max(I_PM2.5 [{{pm25_sub_index}}], I_PM10 [{{pm10_sub_index}}]) = {{aqi_result}}
storage
CPCB Reference Matrix: 2014 v{{cal_ver}}
Data Integrity Signature: {{data_signature}}
ACTIVE NODE: {{node_id}}
fact_check

Automated CPCB Verification Test Vectors

Runtime unit regression suite verifying mathematical compliance against official Central Pollution Control Board standard datasets.

Vectors Loaded: {{total_tests}} Pass Rate: {{pass_rate_pct}}
Test Vector ID Pollutant Input Vector Mathematical Target Range Interpolated Sub-Index Expected AQI Assertion Status
Test Vector {{test_id_1}} PM2.5 = {{test1_pm25}} µg/m³, PM10 = {{test1_pm10}} µg/m³ [{{test1_range}}] I_pm25 = {{test1_i_pm25}} AQI = {{test1_expected}} [{{test1_status}}] (Passed)
Test Vector {{test_id_2}} PM2.5 = {{test2_pm25}} µg/m³, PM10 = {{test2_pm10}} µg/m³ [{{test2_range}}] I_pm25 = {{test2_i_pm25}} AQI = {{test2_expected}} [{{test2_status}}] (Passed)
Test Vector {{test_id_3}} (Severe Excursion) PM2.5 = {{test3_pm25}} µg/m³, PM10 = {{test3_pm10}} µg/m³ [{{test3_range}}] Excursion Triggered AQI = {{test3_expected}} [{{test3_status}}] (Passed)
Algorithm: Piecewise Linear Sub-Index Interpolation (PLSI) with dynamic breakpoint selection.
CPCB Breakpoints verification: {{verification_status}} • Hash: {{hash}}