Afterwards, when (see)?

Afterwards, when the person has seen the results of the experiment, they should evaluate the data and draw conclusions based on the results. They should analyze the data to determine if the hypothesis was supported or not, and if not, what other factors may have contributed to the results. They should also consider any potential sources of error and consider any changes that could be made to the experiment in order to improve the results. Finally, the person should use the conclusions to make recommendations for future experiments or research.