In the collection section, you can see a column indicating "Data uncertainty (%)". This means that you need to determine the percentage of uncertainty of your data (0% = certain and 100% = uncertain)
You can provide the uncertainty of your data in 2 different ways:
Directly from the collection table in the column "Data uncertainty %"
In the data form, available by clicking on the data name or by clicking on "Edit data" accessible from the button to the left of the table
A sidebar opens with all the information of the data.
From here you can then specify the uncertainty of your data using a slider.
Determining the reliability of the activity data is not obvious: it depends on each collaborator and the sources you have available.
To help you measure the reliability of your values while maintaining a certain consistency regardless of the person collecting the data, we provide you with an example measure to maintain coherence across your entire project.