Clicking on any of the images will give you more details about what is involved. There is a fuller description, further guidance and links that get you started.
Popularity statistics are displayed for each application – the ‘Recent weeks’ graph shows the trend in usage of this experiment over the past four weeks and the current week. This graph is not a comparison with any other experiment, but only of how usage of this single experiment has changed over time. The right-hand 'Current week' ranking (e.g. #22/35) shows the popularity of this experiment, compared to all other experiments, during the current week.