44
for off, 1 for low, 2 for mid, and 3 for high. As shown in Figure 33.
Note: For easily browsing, all chart support functions of wheel zoom in/out, mouse drag,
clicking icon to switch data display.
Figure 33 Historical data of the air quality sensor
Note: If formaldehyde (HCHO), total volatile organic compounds (TVOC), and ozone (O
3
) are
displayed in ppm, data in this chart is displayed in ppb, because the ppm values are too small
to browse easily.
1 ppb =
1
1000
ppm
。
