he graphs below show the change in rates of delayed trains and cancelled trains from the first week in October to the third week in November.
主体段分段：一图一段
开头段
The two line graphs illustrate the weekly percentages of train delays and cancellations over a seven-week period from early October to mid-November.
概述段
Overall, both the delay and cancellation rates experienced noticeable fluctuations over the period. While delays peaked in mid-November, the highest cancellation rate occurred in mid-October.
思路要点：
- 延误率、取消率整体都呈现上升趋势，伴随显著波动
- 十一月延误率更高，十月取消率更高
Body paragraph 1
In terms of the rate of delays, there was a modest rise from 20% in the first week of October to 30% a week later, followed by a noticeable drop to a low of 10% by the end of October. After a surge to a peak of 50% in the second week of November, this figure declined rapidly by 20% in the subsequent week.
思路要点：
延误率
- 从OCT_W1到OCT-W2，从20%小幅度上升到30%→随后显著下降到OCT_W4达到10%→到NOV-W2上涨5倍→到NOV-W3急剧下降
Body paragraph 2
Similar variations were also exhibited in cancellations. The rate began at 3% in the first week and soared to 7% in the second week of October, before falling sharply to the original level in the next week. The following three weeks experienced a period of fluctuations between 2% and 3.5%, after which a remarkable growth was recorded to 5% in the third week of November.
思路要点：
取消率
- 取消率也经历了显著波动
- OCT_W1取消率为3%→急剧上升，OCT_W2达到7%→OCT_W3急剧下降回3%→随后，到NOV_W2在2%-3.5%之间波动→到NOV_W3显著上升达到5%
