Table 3.

Month by month comparison of metro ridership.

	Beijing		Shanghai
Month	Change (%) 2020 vs 2019	Change (%) 2021 vs 2019	Change (%) 2020 vs 2019	Change (%) 2021 vs 2019
1	−26.91%	−38.41%	−24.71%	−15.76%
2	−88.70%	−32.42%	−82.84%	−12.74%
3	−80.81%	−20.37%	−59.75%	−5.24%
4	−66.16%	−15.21%	−40.28%	−4.79%
5	−47.65%	−17.49%	−32.37%	−7.16%
6	−47.44%	−13.15%	−21.24%	−0.84%
7	−49.24%	−16.84%	−18.01%	−9.44%
8	−38.12%	−34.53%	−16.34%	−14.27%
9	−16.79%	n. a.	−7.77%	n. a.
10	−20.22%	n. a.	−11.63%	n. a.
11	−16.14%	n. a.	−13.47%	n. a.
12	−16.57%	n. a.	−9.66%	n. a.