What are the deviation ranges of IHR alarms that classify them as low, mid, or high severity alarms?

[mohamedawnallah]

@romain-fontugne For example, in Grip Alarms they have the following business logic for classifying the alarms severity:

[romain-fontugne]

For now let's use:

• Low: 20 to 30
• Medium: 31 to 50
• High: over 50

[mohamedawnallah]

Resolved in this PR:
InternetHealthReport/ihr-website#554

[romain-fontugne]

thanks!