One day at a time
Each day is calculated independently. Formula v1 considers continuous, same-day windows and never wraps a window across midnight.
The target
The calculation selects the shortest window that contains at least 85% of that day's observed total. This threshold belongs to the site method; it is not a game rule.
Ties and empty days
When windows have the same duration, the one covering more of the observed total ranks first; a further tie favors the earlier start. A day with no observed traffic returns no suggested window.