ONES Agent pushes all the telemetry at every 20 seconds to the ONES Collector, so DB will have the values of every 20sec, Further as per time series selection ONES-UI plots the Graph with different average values.
Time Series
Average between 2 data points
Data Points
Reference
1Hour
30sec
120
2Hours
40sec
180
4Hours
1Minute 20sec
180
12Hours
5Minutes
144
1Day
10Minutes
144
1Week
1Hour 10Minutes
144
2Weeks
2Hours 20Minutes
144