Low-cost modular monitoring system for indoor lighting assessment

This dataset supports the publication “A low-cost modular monitoring system for multi-domain indoor lighting and comfort assessment: Development, validation, and office-scale application.” The repository contains the experimental data collected during laboratory calibration and office-scale field deployment of the ecoDAQ monitoring system. The dataset includes: Spatial illuminance measurements recorded under different lighting configurations Spectral measurement outputs (SPD and CCT values) Environmental parameters (air temperature, relative humidity, air velocity) Calculated thermal comfort indices (PMV and PPD) Survey questionnaire used for subjective assessment (ISO 10551-based) Anonymized participant responses (n = 35) The field measurements were conducted in a controlled office environment under two lighting configurations: a conventional ceiling lighting system and a diffuser-based lighting system. Objective measurements and subjective responses were synchronized to enable integrated multi-domain analysis of visual and thermal comfort conditions.All participant data have been anonymized. The dataset is provided to support transparency, reproducibility, and secondary analysis of lighting performance and occupant-centered comfort evaluation.