Skip to main content
. 2022 Feb 7;22(3):1251. doi: 10.3390/s22031251

Figure 3.

Figure 3

Recent trends of the number of publications reporting humidity sensors for respiratory monitoring (filled circles). The number of publications relating to humidity sensors is also shown as open circles. The data were surveyed on 7 January 2022 in Web of Science using the filter: (“humidity sensor”) AND (“breath” OR “respiration”).