One row per distinct set of enemies. This is the memory the bot reads before a fight: when it won and the estimate matched what the fight actually cost, it sends the same army again instead of searching. Otherwise it searches and takes the formation at the index shown. Click a set of enemies to run the engine on it and see the whole list it picks from.
Every single attack on this layer, newest first, for the period selected above. The table above tells you what the bot knows; this one tells you what actually happened — including which formation index each attack used, so you can see how it got where it is.