Rough English translation

This set of line five graphs aim to visualize the distribution of advertising zones in the newspaper Shenbao, in our five usual samples: Jan 7, 1914 ; Jan 3, 1924 ; Jan 5, 1934 ; Feb 1, 1941 ; Jan 1, 1949. Page numbers are indicated on the X axis ; Y axis indicate the presence (1) or absence (1) of advertisements on the corresponding page. This graphs help to locate authorized/restricted zones in the newspaper Shenbao. By juxtaposing the five successive graphs, one can trace the changes in the newspaper policy towards advertising - either to a more restrictive or liberal policy, and the possible migrations of restricted/authorized zones from one page to aonther accross time.