Chlorine outages vs Hardware outages

[olafveerman]

In our initial design for the reliability section we are comparing the number of outages per month against the total number of dispensers installed.

On closer inspection of the data, we found out that your outage rate is very low, around 3% per month. This is great for the program, but makes the outages almost impossible to perceive on the chart.

Our proposal to solve this, is to remove the total dispensers from the chart and compare Chlorine Outages vs. Hardware Outages. We did a quick comparison of the data and found that they are similar in scale, making them easy to compare.

We'd stick to our initial layout, but plot Chlorine Outages on top and Hardware Outages on the bottom. In the chart we'd also find a way to emphasize how low the outage rate actually is.

Please let us know if you think this is a good way forward.

cc @katrinskaya @mphillipsea

[ascalamogna]

@katrinskaya here is the updated version of the outages graphic. This is a wireframe that includes mock data. This is not real but an accurate guess at how it may look based on your data.

The graph would visual the percent of all dispensers that have reported chlorine issues on top and the precent of all dispensers that have reported hardware issues on bottom. The user can toggle between two scales to see a 'zoomed in' version when the max is 5% and a more overall view when the max is 100%. This way the user still understands how low the percentage of dispensers with outages is overall but also gets the further breakdown emphasizing that most outages are due to chlorine and not hardware.

Note below that these are view of the SAME graphic. This is NOT two graphics. I just wanted to show you how the graphic would change based on which scale the user toggles between.

[katrinskaya]

I still think we need to show the functional dispensers with more than a percentage. That is just the outage rate not the relative outage versus functional. I liked the color chart in in v 1 better in that way. We do need an actual functional dispenser rate - even if the outage is minuscule - so this it not quite it if this is the only display here.

We discussed two graphs - relative (functional versus non-functional) and then an absolute one that distinguishes between hardware and chlorine delivery.

[ascalamogna]

@katrinskaya

Okay, how about something like this? The first chart shows the high number of functional dispensers and then the second chart supplements by showing the breakdown of those outages.

[bchen10]

Hey @katrinskaya , Let us know if @ascalamogna's revised chart makes sense here so that we can start implementing soon. Thank you!

[katrinskaya]

I see what you did. Chart 2 is fine - and interesting, the chlorine delivery is creeping back up :) Chart 1: I still wonder whether we could not add the non-functioning dispenser in a different color. I see that you changed the ratio / months depicted in the bar chart but presumably, with this scale, adding the non-working dispensers is possible to reach 100% - below the x-axis / on the minus scale - is possible. Also, we need to adjust the title eventually - should be something like Percentage of Functional Dispensers.

[ascalamogna]

@katrinskaya we'll go ahead and add the nonfunctioning dispensers to the first chart. The title is not final yet, so we'll be working on those as well. Thanks for your feedback!