This set of five curves aims to trace the distribution of the advertising population (number of advertisements per page) in each sample of the newspaper Shenbao. Each curve reveal the variations of population from a page to another. By juxtaposing the five curves, one can trace the changes in this demographic distribution.

The measurement have been made our five usual samples of the Shenbao (January 7, 1914; January 3, 1924; January 5, 1934; February 1, 1941; January 1, 1949). The blue color indicates minimal figures; the red color stands for maximal numbers.