The two line graphs illustrate the proportion of trains, that belong to a particular company, and were either delayed or cancelled between October and November in 2008. Overall, both the percentage of trains that were delayed and cancelled witnessed significant fluctuations throughout the researched period. Additionally, November witnessed the highest delay rates.
In the first week of October, about 20% of all trains did not run on time. Then, the proportion of trains running late rose slightly by 10% in the second week of October, before it fell moderately to approximately 5% by the end of October. In contrast, there was a sharp increase to 55% in the percentage of trains running late in the second week of November, which was then followed by a slight drop to 40% in the third week.
Starting at only 1% in the first week, the percentage of trains that were cancelled reached a peak of 7% in the second week of October. However, a week later it dropped rapidly, and back to the initial figure. Erratic behavior can be witnessed in the proportion of cancelled trains for the rest of the period, with about 4% of total trains being cancelled in the final week.