Frequently Asked Questions

For a visual description of how to read our map, check out our Instagram Story here.

First, find where you live in the city (this is your region). The box with numbers in has 3 sections that have the following information in them:

The Top Section shows you 4 numbers, the first is the ACTIVE CASES of COVID in that area. The other three are showing you the change in active cases from yesterday (1-day), last week (7-day), and 2 weeks ago (14-day).

The Bottom Left Section shows you the estimated population of that region according to the data from

Finally, the Bottom Right Section show you how many ACTIVE CASES of COVID there are per 10,000 people. This number helps tell you gives a better idea of spread/risk areas than just the amount of active cases in a region.

This graph shows the average number of tests it takes to get a single positive result for each week in Calgary, and the black lines show the standard deviation of this average – in this case, a smaller standard deviation is better because it shows a more consistent trend.
For this particular metric, higher numbers are better, so the colours reflect that.
The graph below shows that we averaged about 17 tests per single positive result. 

The colours of each region represent CASES per 10k PEOPLE and are meant to give you a quick at-a-glance look at how well or not-so-well an area is doing.

We have tested our current design using the Coblis Color Blindness Simulator which cover the following categories of colour blindness:

  • Trichromatic
  • Anomalous Trichromacy
  • Dichromatic
  • Monochromatic view

Airdrie, Okotoks, etc… are not a part of the The City of Calgary and we want this map to focus on that first and foremost.

The map’s design is made with clarity in mind, which includes using whitespace to help us do that. Adding colour to the outside regions would busy the map up and challenge the clarity we work really hard at keeping.

We collect our data from AHS in a spreadsheet that automates our 1/7/14 day changes and other features. We then manually add the data to our design built in Adobe Illustrators. 

We are 🙂 Reddit user /u/ConcreteAndStone is working on the automation side of things for this project. 

There are 4 of us.

The Data

COVID Numbers are sourced directly from the Government of Alberta. These numbers are released at 15:30MST Monday to Friday (excluding holidays)

Population data is sourced from Open Alberta Datasets under Community Profile: <enter region here> health data and summary

These are the boundaries that AHS provides to both Calgary and Edmonton which can be found on their site under geospatial.

They may differ from other sources because this data is specifically from Alberta Health Services (AHS).

If you’re unsure which AHS Region your neighbourhood is in? Just click here to find out.

The Calgary Zone, as it is sometimes referred to, includes Cochrane, Airdrie, Strathmore, Okotoks, and Canmore.

Our totals are only for the City of Calgary. We show the satellite cities for visual reference.

AHS only recently started releasing COVID data on the weekends. Prior to this, they would provide combined data on the Monday or Tuesday if it was a holiday. 

This is what became known as 3-day or 4-day changes, meaning the numbers included 3 or 4 days worth of data.

The R number is a way of rating coronavirus or any disease’s ability to spread.

R is the number of people that one infected person will pass on a virus to, on average.

Measles has an R number of 15 in populations without immunity.

That means, on average, one person will spread measles to 15 others.

Coronavirus – known officially as Sars-CoV-2 – would have a reproduction number of about 3 if no action was taken to stop it spreading.

To learn more, please review this article by the BBC: Coronavirus: What is the R number and how is it calculated?