Inter-comparison of low-cost sensors' measurements for indoor air quality applications

Low-cost sensor datasets: a dedicated inter-comparison campaign benchmarking AirSensis against a commercial sensor system. LCS_inter-comparison_data.zip Inter-comparison of low-cost sensors' measurements for indoor air quality applications Data from an inter-comparison campaign of low-cost sensors (LCS) conducted July 6–17, 2026 inside office buildings of NCSR "Demokritos", Athens, Greece, ahead of an indoor air quality study. Two systems were compared: AirSensis (developed by Demokritos with mSensis S.A.) and the commercial Airthinx system (NextGen LifeLabs, USA) - 5 and 3 units respectively. Both systems measured PM2.5, PM10 and CO2 at 1-minute resolution; this dataset contains the 1-hour averages, enabling direct unit-to-unit and system-to-system comparison. Full parameter descriptions and device specifications are given in the accompanying Measurement_metadata_description.xlsx and LCS specifications.xlsx files.