Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2017 Sep 8;6(9):e17046. doi: 10.1038/lsa.2017.46

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

Copyright © 2017 The Author(s)

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/4.0/

PMC Copyright notice

c-Air repeatability tests at different locations. (a–c) Box-plot of the repeatability test results using two c-Air devices (A and B) at the (1) class-100 clean room of CNSI on 21 June 2016; (2) class-1000 clean room at CNSI on 23 May 2016; (3) indoor environment of the UCLA Engineering IV building on 25 May 2016; and (4) outdoor environment at the second floor patio of the UCLA Engineering IV building on 23 May 2016. The box-plot was generated using the box-whisker plot method with a whisker length of 1.5 (99.3% confidence) to exclude outliers, which are marked by the symbol ‘x.’ (d–g) Particle size and density distribution histogram comparison at each location: d Class-100 clean room; e class-1000 clean room; f indoor environment; and g outdoor environment. Seven samples for each c-Air device with a sampling period of 30 s were obtained at each location.