Average number of coronavirus particles per 100,000 inhabitants
This is the average of the last measurements of all wastewater treatment plants in this safety region. This figure also takes account of how many inhabitants are served by a wastewater treatment plant, and how much of the wastewater flowing to the plant comes from the safety region.
Calculation of average number of virus particles
Every day the dashboard publishes the average number of virus particles per 100,000 inhabitants. To calculate this number, we use the last measurement of each wastewater treatment plant. The last measurement of a treatment plant can count several days in the calculation.
All wastewater treatment plants measure on average three times a week. If, for example, a treatment plant passes on a new measurement on Monday, Wednesday and Saturday, the result of Wednesday's measurement also counts on Thursday and Friday. Only if the last measurement is older than nine days, it is not included in the average.
Average number of virus particles over time (per 100,000 inhabitants)
This graph shows the average number of virus particles over time per 100,000 inhabitants.
- 0 to 10
- 10 to 50
- 50 to 100