I know that the FAQ explains that each URL is visited 3 times and the median result is recorded. However, I noticed that the response to this post in the Meta section indicates that that the monthly crawl can take several weeks to complete. Taking these two together, I am curious if the repeat measurements mentioned in the FAQ are made consecutively after the initial visit or are they scattered throughout the crawl. If the 3 visits are made consecutively, are there methods to account for the differences in networking conditions between two sites which were measured at different times of day? For example, there is likely to be more traffic and congestion in the Internet at 10am when compared to 2am.