Trend
Daily mean by site
PS01PS02
Pollution Rose
Mean value by wind sector — points to likely source direction
Diurnal Rhythm — When Levels Peak
Mean by hour of day, scaled to each parameter's own range. Darker = relatively higher.
Noise Compliance — Day vs Night
Energy-averaged Leq vs legal limits (60 dB day 06:00–22:00, 40 dB night 22:00–06:00)
24-Hour Average vs Legal Limit
Period mean per parameter (bars) vs statutory limit (line) — 24-hr average parameters
Limits: PM10 60 · PM2.5 35 · NO2 50 · SO2 20 µg/m³ · CO 7 mg/m³ · TVOC 600 µg/m³ (24-hr avg) · O3 235 µg/m³ (1-hr) · Noise 60/40 dB (day/night)