Weekly source layer
Forty statistics transcribed from the four numbered tables in Virginia DEQ's July 17, 2026 analysis, plus a separate deployment-history table. Every row points back to the agency report.
DOWNLOAD
The statistics CSV is a direct transcription of DEQ Tables 1-4. The deployment CSV records publicly stated sensor starts, stops, moves and maintenance status. No values were estimated from charts.
QUICK READING
Ranges below summarize means printed by DEQ across the listed sites. They are descriptive study-period statistics, not source-apportionment results or legal attainment determinations.
CO · Hourly0.1-0.2 ppm
Range of site means in DEQ Table 1; not an attribution to any nearby source.
NO2 · Hourly2.1-5.5 ppb
Range of site means in DEQ Table 2. The collocated regulatory-monitor mean is 3.7 ppb.
PM2.5 · Hourly4.2-10.3 ug/m3
Range of site means in DEQ Table 3. DEQ identifies wildfire smoke and July 4 fireworks as important period effects.
PM2.5 · 24-hour4.2-9.3 ug/m3
Range of site means in DEQ Table 4. A short study-period mean is not a three-year NAAQS design value.
CRITICAL LIMIT
DEQ states that the APEX/Kunak instruments can show concentration levels and trends but are not Federal Reference or Equivalent Method instruments and cannot determine NAAQS attainment.
The report also documents voided periods, an airflow failure, instrument-quality issues and event effects from fireworks and wildfire smoke. Those qualifications travel with this transcription.