letter . 2020 Jun 16;20(12):3399. doi: 10.3390/s20123399
© 2020 by the authors.
Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
Figure 8.
Selection windows for analyzing the data.