Over twelve months: where the drops came from, how often, and how far. Past deals are no longer bookable and so are not links — what they add here is the pattern.
Where the deals to Dortmund came from
The bar says how often a drop has been proven from that airport over twelve months. The badge says how far the price fell.
RomeFCO · Italy2−50 %1 bookable
When the deals show up
Each bar is the number of drops spotted that month. The tallest is September.
