The image shown above is a vector. You can zoom in as much as you want to see in which lap was each individual time done.
The first lap is not taken into consideration for this analysis, and laps done when the safety car was out were also deleted. Incomplete laps, meaning laps when the driver went in or out of the pits, are excluded as well from this analysis.
Laps done with the intermediate or wet tires are considered for this analysis, but not shown since it would mess up the presentation of the data.
The box represents a modified box plot, with the line in the middle representing the mean (average) time done by each driver. The top and bottom line respectivly represent the 75% percentile and the 25% percentile.
Remember that drivers with more pit stops tend to have faster times than drivers with fewer pit stops.