total man-days; total person-days
Used in labor statistics, project management, and event attendance to count the sum of daily headcounts over a period. Emphasizes the cumulative work or attendance volume.
The total man-days this month exceeded 500.
Please calculate the total person-days for the construction work.
total number of people; cumulative headcount
Counts the total number of individuals (e.g., passengers, visitors, personnel) without multiplying by days. Often used for aggregate attendance or passenger statistics.
The total number of visitors to the exhibition reached 30,000.
The annual total number of passengers on this line exceeds one million.