Better designs SHOULD: * use at least 4 measurements that are at least 6 hours apart, because: - there is a daily cycle - each day contains 2 similar points in the cycle (it is an up and down cycle) - if all 4 measurements happen within a few hours, they will still be biased * use at least 3 days of observed bandwidths, because: - a single download at the changeover point can affect 2 days * weight bandwidths based on the time since the last bandwidth, because: - if we only record bandwidths when they change, bandwidths that are updated soon after the last bandwidth are weighted too high - we can either: * record the bandwidths every hour, even if they haven't changed * weight each bandwidth by the time since the last bandwidth * use a decaying average for measured and observed bandwidths, because: - recent bandwidths are closer to the relay's current capacity - and we want accurate results