經營書店的新客戶正在為新的訓練系列課程放送廣告活動，並從教學手冊開始著手。他們在 Campaign Manager 360 中，將計數器代碼加入 Floodlight 代碼。 如果想評估手冊下載人數，請問你該使用哪種計算方法？

The unique count method is correct because it counts each unique user only once during a 24-hour period, regardless of how many times they download the manual. This accurately measures the number of distinct individuals who downloaded the manual, which is the goal of assessing "manual downloaders." The "per session" method would count each download within a session, potentially overcounting if a user downloads multiple times in one session. The "standard" method counts every instance of the Floodlight tag firing, which would overcount if a user downloads the manual multiple times. The "custom" method allows for advanced counting logic but is not necessary for this straightforward unique user measurement.