How is my website's availability worked out?

Open Website watch for the project. The Availability card shows three figures:

• Available: over the period, with time nobody checked counted against the site.
• When checked: how often the site answered when SEOmise looked.
• Time checked: the share of the expected time that was checked, with how many checks were up, down or not made.

Below them: the last 24 hours, 7 days and 30 days.

When a figure appears

A preliminary figure appears after a day of watching and the full figure after a month; nothing before watching started is counted. When too little of the time was checked, no figure is shown, only how much was checked.

Fewer false alarms

• A failed check is tried again a few seconds later; the time counts as down only when the second attempt fails too.
• Maintenance windows: set them ahead of time. Down time inside them is not counted and raises no alert.
• Related alerts are grouped into one notice.

Checks run from SEOmise's server; the card says where.