Pictures and spectra.
Tables and graphs whenever practical.
Brief statements of the results in the text (without repeating the data in the graphs and tables). When writing about each picture, graph or table, refer to it parenthetically e.g. (Figure 1).
If possible give a section of related results and then comment on them rather than presenting many pages of unrelated results and then discussing them at the end. Subheadings can be used to divide this section so that it is easier to understand.
Massive quantities of data or raw data (not refined statistically) can be presented in appendices.
Include only your own observed results in this section.