A: It's means the variable time level for chart.
Below is a table that show the available Zoom Levels for all parameters CO2/Temp/RH, as well as the duration of each division for corresponding Zoom Levels:
Zoom Level (Time Span)
Time Per Division
1m (minute)
5sec/div
1h (hour)
5m/div
1d (day)
2h/div
1w (week)
0.5d/div
Auto Cycle Zoom
Cycle