Summary of quantitative results
Guidelines for exceedances are based on:
Canada
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Chemistry tests
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Grand River in Ontario
Pioneer Tower Bridge has data for previous_weather_description, water_level, clarity, water_flow, air_temperature, chloride, conductivity, water_temperature, Ice on, current_weather, previous_weather, on_the_water_s_surface, algae, colour, odour, and current_weather_description from 19 January 2025 to 31 August 2025.