These set of three charts aims to evaluate the lifetimes of Oriental Advertising's boards in the International Settlement during the year 1914. The figure are based on the the census made by the S.M.C. in 1914 and the regular inventories of boards that Oriental Advertising Agency's sent to the Council between May 1 and December 31, 1914. Source: SMA (SMC), U1-14-3251 (1139-1151), U1-14-3267 (1047-1049). The first pie chart ignores the boards for which we do not know the date of removal or end of contract. The second pie chart includes those under-documented artifacts (63%).

Both pie charts reveal that despite the war, longer contracts (more than three months) tend to dominate (60%, 22%), followed by contracts between 1 to 2 months (20%, 7%), less than one month (12%, 5%) and eventually three-month contracts  (8%, 3%).

The last bart chart indicates the average duration of contracts (92 days, about 3 months). Beyond this average figure, it reveals strong gaps between the maximal (153 days) and minimal durations (19 days).