How to see statistics for a timeseries
The graph shows the shape of the data; Statistics shows the numbers. It's where you get the minimum, maximum, average and sum for a timeseries over the period you're viewing.
How to open the statistics
- Open the building you want to work on. See How to switch building and search for a building.
- Open the analysis under Analysis > Timeseries graph.
- Find the timeseries in the list below the graph.
- Click Statistics on its row.
The dialog is called Statistics for … with the series name.
What the statistics show
Value | Meaning |
|---|---|
Min | lowest measurement in the period |
Max | highest measurement in the period |
Average | the average of the measurements |
Sum | the sum of the measured values |
Integral | the area under the curve — value multiplied by time |
Difference between first and last datapoint | the change across the period |
Time of last datapoint | when the series last reported |
If there's no data, it says No data for the selected period.
Sum or integral?
This is the most important distinction to grasp, and it depends on what the series measures:
- Sum adds the measured values together. Right for series where each value is a quantity — consumption per hour, for example.
- Integral multiplies the value by the time it lasted. Right for series where the value is a rate — power in kW becomes energy in kWh.
Sum a power series and you get a number with no physical meaning. The integral of the same series is the energy.
Why "Time of last datapoint" is worth checking
It's the quickest way to spot that a meter has stopped reporting. A series that stopped three weeks ago looks like a flat line or nothing at all on the graph — but the timestamp says it outright.
If it's a meter you depend on, set up a Missing data alarm on it. See How to choose the right alarm type.
Frequently asked questions
Do the statistics follow the period I've selected?
Yes. Every figure applies to the period the analysis shows, so changing the period changes the numbers.
Can I see statistics for several series at once?
Statistics open per series. To compare figures across several, open them one after another or download the data — see How to see analysis data as a table.
Where do I find the same thing for energy?
The energy view has its own tables and export — see How to see energy data as a table.
Tip!
Check Time of last datapoint before drawing conclusions from Average or Max. A series that stopped reporting midway through the period produces statistics that look perfectly normal — they're just calculated over half the time you think.