Finding F-1261

“The ozone levels in Room A continued to track the concentrations in the lounge area, and in fact were 2-3 ppb lower, likely due to higher rates of ozone deposition in the small furnished room.”

McNeill Effects of germicidal far-UVC on ozone and particulate matter in a conference room… (2025). PLoS One. Page 4. CKB 1095

Structure

Factor: Ozone (O₃)
Setting: conference room, US
Study design: field experiment in a closed conference room of an office suite in New York: far-UVC lamps at 222 nanometres were run at single-lamp and at higher intensity while ozone, particle number and particle size were measured continuously in the room and in the adjacent open lounge over experiments lasting up to ten daytime hours (class 3)
Effect: difference 3
Caveat: the study reads the difference as faster ozone deposition in the small furnished room

A Finding records what one published document states, verbatim and with its page. It is not a conclusion of Coridum; see the Claims that build on it.