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AQI space model updated with new hourly to daily logic for calculations and categorization of aqi brackets
This commit is contained in:
khuss
@ -1,9 +1,11 @@
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WITH device_space AS (
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-- CTE for device + status log + space
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WITH device_space AS (
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SELECT
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device.uuid AS device_id,
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device.created_at,
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device.space_device_uuid AS space_id,
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"device-status-log".event_time::date,
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"device-status-log".event_time::timestamp AS event_time,
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"device-status-log".code,
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"device-status-log".value,
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"device-status-log".log
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@ -12,43 +14,201 @@
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ON device.uuid = "device-status-log".device_id
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LEFT JOIN product
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ON product.uuid = device.product_device_uuid
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WHERE product.cat_name = 'hjjcy'
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WHERE product.cat_name = 'hjjcy'
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),
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average_pollutants as(
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SELECT
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event_time,
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space_id,
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AVG(CASE WHEN code = 'voc_value' THEN value::numeric END) AS voc_avg,
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AVG(CASE WHEN code = 'pm1' THEN value::numeric END) AS pm1_avg,
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AVG(CASE WHEN code = 'pm25_value' THEN value::numeric END) AS pm25_avg,
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AVG(CASE WHEN code = 'pm10' THEN value::numeric END) AS pm10_avg,
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AVG(CASE WHEN code = 'ch2o_value' THEN value::numeric END) AS ch2o_avg,
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AVG(CASE WHEN code = 'co2_value' THEN value::numeric END) AS co2_avg,
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AVG(CASE WHEN code = 'air_quality_index' then level_to_numeric(value) END) as air_quality_index
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-- Getting the hourly pollutants max min avg for each space
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average_pollutants AS (
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SELECT
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date_trunc('hour', event_time) AS event_hour,
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space_id,
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-- AVG READINGS
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AVG(CASE WHEN code = 'voc_value' THEN value::numeric END) AS voc_avg,
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AVG(CASE WHEN code = 'pm1' THEN value::numeric END) AS pm1_avg,
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AVG(CASE WHEN code = 'pm25_value' THEN value::numeric END) AS pm25_avg,
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AVG(CASE WHEN code = 'pm10' THEN value::numeric END) AS pm10_avg,
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AVG(CASE WHEN code = 'ch2o_value' THEN value::numeric END) AS ch2o_avg,
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AVG(CASE WHEN code = 'co2_value' THEN value::numeric END) AS co2_avg,
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AVG(CASE WHEN code = 'air_quality_index' THEN level_to_numeric(value) END) AS air_quality_index_avg,
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-- MIN READINGS
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MIN(CASE WHEN code = 'voc_value' THEN value::numeric END) AS voc_min,
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MIN(CASE WHEN code = 'pm1' THEN value::numeric END) AS pm1_min,
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MIN(CASE WHEN code = 'pm25_value' THEN value::numeric END) AS pm25_min,
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MIN(CASE WHEN code = 'pm10' THEN value::numeric END) AS pm10_min,
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MIN(CASE WHEN code = 'ch2o_value' THEN value::numeric END) AS ch2o_min,
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MIN(CASE WHEN code = 'co2_value' THEN value::numeric END) AS co2_min,
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MIN(CASE WHEN code = 'air_quality_index' THEN level_to_numeric(value) END) AS air_quality_index_min,
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-- MAX READINGS
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MAX(CASE WHEN code = 'voc_value' THEN value::numeric END) AS voc_max,
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MAX(CASE WHEN code = 'pm1' THEN value::numeric END) AS pm1_max,
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MAX(CASE WHEN code = 'pm25_value' THEN value::numeric END) AS pm25_max,
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MAX(CASE WHEN code = 'pm10' THEN value::numeric END) AS pm10_max,
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MAX(CASE WHEN code = 'ch2o_value' THEN value::numeric END) AS ch2o_max,
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MAX(CASE WHEN code = 'co2_value' THEN value::numeric END) AS co2_max,
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MAX(CASE WHEN code = 'air_quality_index' THEN level_to_numeric(value) END) AS air_quality_index_max
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FROM device_space
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--WHERE code IN ('pm25_value', 'pm10')
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GROUP BY space_id, event_time
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FROM device_space
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GROUP BY space_id, event_hour
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),
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-- Fill NULLs due to missing log values
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filled_pollutants AS (
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SELECT
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*,
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-- Forward-fill nulls using LAG() over partitioned data
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COALESCE(pm25_avg, LAG(pm25_avg) OVER (PARTITION BY space_id ORDER BY event_hour)) AS pm25_filled_avg,
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COALESCE(pm10_avg, LAG(pm10_avg) OVER (PARTITION BY space_id ORDER BY event_hour)) AS pm10_filled_avg,
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COALESCE(voc_avg, LAG(voc_avg) OVER (PARTITION BY space_id ORDER BY event_hour)) AS voc_filled_avg,
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COALESCE(co2_avg, LAG(co2_avg) OVER (PARTITION BY space_id ORDER BY event_hour)) AS co2_filled_avg,
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COALESCE(ch2o_avg, LAG(ch2o_avg) OVER (PARTITION BY space_id ORDER BY event_hour)) AS ch2o_filled_avg,
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COALESCE(air_quality_index_avg, LAG(air_quality_index_avg) OVER (PARTITION BY space_id ORDER BY event_hour)) AS aqi_filled_avg,
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COALESCE(pm25_min, LAG(pm25_min) OVER (PARTITION BY space_id ORDER BY event_hour)) AS pm25_min_filled,
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COALESCE(pm10_min, LAG(pm10_min) OVER (PARTITION BY space_id ORDER BY event_hour)) AS pm10_min_filled,
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COALESCE(voc_min, LAG(voc_min) OVER (PARTITION BY space_id ORDER BY event_hour)) AS voc_min_filled,
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COALESCE(co2_min, LAG(co2_min) OVER (PARTITION BY space_id ORDER BY event_hour)) AS co2_min_filled,
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COALESCE(ch2o_min, LAG(ch2o_min) OVER (PARTITION BY space_id ORDER BY event_hour)) AS ch2o_min_filled,
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COALESCE(air_quality_index_min, LAG(air_quality_index_min) OVER (PARTITION BY space_id ORDER BY event_hour)) AS aqi_min_filled,
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COALESCE(pm25_max, LAG(pm25_max) OVER (PARTITION BY space_id ORDER BY event_hour)) AS pm25_max_filled,
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COALESCE(pm10_max, LAG(pm10_max) OVER (PARTITION BY space_id ORDER BY event_hour)) AS pm10_max_filled,
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COALESCE(voc_max, LAG(voc_max) OVER (PARTITION BY space_id ORDER BY event_hour)) AS voc_max_filled,
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COALESCE(co2_max, LAG(co2_max) OVER (PARTITION BY space_id ORDER BY event_hour)) AS co2_max_filled,
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COALESCE(ch2o_max, LAG(ch2o_max) OVER (PARTITION BY space_id ORDER BY event_hour)) AS ch2o_max_filled,
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COALESCE(air_quality_index_max, LAG(air_quality_index_max) OVER (PARTITION BY space_id ORDER BY event_hour)) AS aqi_max_filled
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FROM average_pollutants
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),
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-- Calculate max, min, avg hourly AQI for each space
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hourly_results as (
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SELECT
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space_id,
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event_hour,
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--voc_filled,
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pm25_filled_avg,
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pm10_filled_avg,
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-- co2_filled,
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--ch2o_filled,
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--aqi_filled,
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pm25_max_filled,
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pm10_max_filled,
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pm25_min_filled,
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pm10_min_filled,
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air_quality_index_avg,
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GREATEST(
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calculate_aqi('pm25', pm25_filled_avg),
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calculate_aqi('pm10', pm10_filled_avg)
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--calculate_aqi('voc_value', voc_filled_avg),
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--calculate_aqi('co2_value', co2_filled_avg),
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--calculate_aqi('ch2o_value', ch2o_filled_avg)
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-- Add more AQI sources as needed
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) AS hourly_avg_aqi,
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GREATEST(
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calculate_aqi('pm25', pm25_max_filled),
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calculate_aqi('pm10', pm10_max_filled)
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) AS hourly_max_aqi,
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GREATEST(
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calculate_aqi('pm25', pm25_min_filled),
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calculate_aqi('pm10', pm10_min_filled)
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) AS hourly_min_aqi,
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case
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when GREATEST(
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calculate_aqi('pm25', pm25_filled_avg),
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calculate_aqi('pm10', pm10_filled_avg)
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) <= 50 then 'Good'
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when GREATEST(
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calculate_aqi('pm25', pm25_filled_avg),
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calculate_aqi('pm10', pm10_filled_avg)
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) <= 100 then 'Moderate'
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when GREATEST(
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calculate_aqi('pm25', pm25_filled_avg),
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calculate_aqi('pm10', pm10_filled_avg)
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) <= 150 then 'Unhealthy for Sensitive Groups'
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when GREATEST(
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calculate_aqi('pm25', pm25_filled_avg),
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calculate_aqi('pm10', pm10_filled_avg)
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) <= 200 then 'Unhealthy'
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when GREATEST(
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calculate_aqi('pm25', pm25_filled_avg),
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calculate_aqi('pm10', pm10_filled_avg)
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) <= 300 then 'Very Unhealthy'
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else 'Hazardous'
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end as aqi_category
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FROM filled_pollutants
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ORDER BY space_id, event_hour
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),
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-- counting how many categories/hours are there in total (in case device(s) was disconnected could be less than 24)
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daily_category_counts AS (
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SELECT
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space_id,
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date_trunc('day', event_hour) AS event_day,
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aqi_category,
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COUNT(*) AS category_count
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FROM hourly_results
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GROUP BY space_id, event_day, aqi_category
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),
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-- Aggregate Total Counts per Day
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daily_totals AS (
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SELECT
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space_id,
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event_day,
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SUM(category_count) AS total_count
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FROM daily_category_counts
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GROUP BY space_id, event_day
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),
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-- Calculate the daily of the daily min max avg AQI values
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daily_averages AS (
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SELECT
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space_id,
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date_trunc('day', event_hour) AS event_day,
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ROUND(AVG(hourly_avg_aqi)::numeric, 2) AS daily_avg_aqi,
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ROUND(AVG(hourly_max_aqi)::numeric, 2) AS daily_max_aqi,
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ROUND(AVG(hourly_min_aqi)::numeric, 2) AS daily_min_aqi
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FROM hourly_results
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GROUP BY space_id, event_day
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),
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-- Pivot Categories into Columns
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daily_percentages AS (
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SELECT
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dt.space_id,
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dt.event_day,
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ROUND(COALESCE(SUM(CASE WHEN dcc.aqi_category = 'Good' THEN dcc.category_count ELSE 0 END) * 100.0 / dt.total_count, 0), 2) AS good_percentage,
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ROUND(COALESCE(SUM(CASE WHEN dcc.aqi_category = 'Moderate' THEN dcc.category_count ELSE 0 END) * 100.0 / dt.total_count, 0), 2) AS moderate_percentage,
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ROUND(COALESCE(SUM(CASE WHEN dcc.aqi_category = 'Unhealthy for Sensitive Groups' THEN dcc.category_count ELSE 0 END) * 100.0 / dt.total_count, 0), 2) AS unhealthy_sensitive_percentage,
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ROUND(COALESCE(SUM(CASE WHEN dcc.aqi_category = 'Unhealthy' THEN dcc.category_count ELSE 0 END) * 100.0 / dt.total_count, 0), 2) AS unhealthy_percentage,
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ROUND(COALESCE(SUM(CASE WHEN dcc.aqi_category = 'Very Unhealthy' THEN dcc.category_count ELSE 0 END) * 100.0 / dt.total_count, 0), 2) AS very_unhealthy_percentage,
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ROUND(COALESCE(SUM(CASE WHEN dcc.aqi_category = 'Hazardous' THEN dcc.category_count ELSE 0 END) * 100.0 / dt.total_count, 0), 2) AS hazardous_percentage
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FROM daily_totals dt
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LEFT JOIN daily_category_counts dcc
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ON dt.space_id = dcc.space_id AND dt.event_day = dcc.event_day
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GROUP BY dt.space_id, dt.event_day, dt.total_count
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)
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SELECT
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event_time::date as date,
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space_id,
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pm1_avg,
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pm25_avg,
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pm10_avg,
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voc_avg,
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ch2o_avg,
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co2_avg,
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--calculate_aqi('pm25', pm25_avg) AS aqi_pm25,
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--calculate_aqi('pm10', pm10_avg) AS aqi_pm10,
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GREATEST(
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calculate_aqi('pm25', pm25_avg),
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calculate_aqi('pm10', pm10_avg),
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calculate_aqi('voc_value', voc_avg),
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calculate_aqi('co2_value', co2_avg),
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calculate_aqi('ch2o_value', ch2o_avg)
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) AS overall_AQI,
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air_quality_index as avg_space_device_aqi
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FROM average_pollutants;
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-- Final Output
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SELECT
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p.space_id,
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p.event_day,
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p.good_percentage,
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p.moderate_percentage,
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p.unhealthy_sensitive_percentage,
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p.unhealthy_percentage,
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p.very_unhealthy_percentage,
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p.hazardous_percentage,
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a.daily_avg_aqi,
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a.daily_max_aqi,
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a.daily_min_aqi
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FROM daily_percentages p
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LEFT JOIN daily_averages a
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ON p.space_id = a.space_id AND p.event_day = a.event_day
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ORDER BY p.space_id, p.event_day;
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