Table 2. Changes in the mean daily number of passengers between seven days before and after five important events.
Five important events: January 27 - the KCDC raises its infectious disease alert level from “Yellow” to “Orange”; February 20 - the first death due to COVID-19 in South Korea reported; February 29 - the number of new confirmed cases reaches a peak with 909 cases; March 10 - mass infection reported for the first time in Seoul; March 22 - the KCDC starts a campaign for aggressive social distancing
N: the absolute change in the mean daily number of passengers; %: the percentage change in the mean daily number of passengers; KCDC: Korea Centers for Disease Control and Prevention
| Stations | January 27 | February 20 | February 29 | March 10 | March 22 | |||||
| N | % | N | % | N | % | N | % | N | % | |
| All stations | -925,717.9 | -12.6 | -1,352,153.3 | -20.8 | -343,574.0 | -7.3 | 62,090.7 | 1.4 | 107,398.9 | 2.3 |
| Young: Hongik University | -16,719.9 | -19.1 | -21,611.6 | -29.1 | -6,208.4 | -14.1 | 1,688.3 | 4.3 | 131.0 | 0.3 |
| Young: Sinchon | -9,260.1 | -19.5 | -9,499.7 | -23.2 | -1,668.1 | -6.0 | 1,412.9 | 5.2 | 373.3 | 1.3 |
| Young: Konkuk University | -7,431.0 | -15.3 | -10,247.7 | -24.6 | -3,146.4 | -11.5 | 791.4 | 3.2 | 131.6 | 0.5 |
| Young: Seoul National University | -4,685.6 | -9.0 | -8,583.9 | -18.3 | -2,545.6 | -7.3 | 220.0 | 0.7 | 795.0 | 2.3 |
| Old: Jongno 3-ga | -6,366.1 | -18.8 | -8,116.6 | -30.1 | -2,176.3 | -12.6 | 1,283.6 | 8.1 | 462.4 | 2.6 |
| Old: Jongno 5-ga | -4,904.4 | -17.6 | -4,742.7 | -21.9 | -789.0 | -5.0 | -38.3 | -0.3 | 637.4 | 4.1 |
| Old: Cheongnyangni | -5,906.1 | -22.3 | -4,296.3 | -21.2 | -685.3 | -4.6 | 155.6 | 1.1 | 605.7 | 4.1 |
| Old: Jegidong | -7,396.9 | -30.5 | -3,979.1 | -24.1 | -18.4 | -0.2 | 37.1 | 0.3 | 630.9 | 5.2 |
| Work: Gasan Digital Complex | -4,483.3 | -7.3 | -7,222.1 | -12.6 | -4,404.3 | -9.3 | -870.9 | -2.0 | 1,746.6 | 4.0 |
| Work: Yeoksam | -5,739.6 | -10.1 | -9,701.9 | -18.4 | -4,832.6 | -12.1 | 1,093.9 | 3.0 | 754.0 | 2.0 |
| Work: Yeouido | -4,229.9 | -8.7 | -7,922.6 | -17.5 | -3,786.7 | -11.0 | 644.7 | 2.0 | 1,089.9 | 3.3 |
| Work: City Hall | -7,205.1 | -13.9 | -7,131.3 | -16.2 | -4,026.0 | -11.7 | -231.6 | -0.8 | 124.7 | 0.4 |
| Leisure: Express Bus Terminal | -14,960.3 | -25.6 | -15,877.6 | -34.3 | -2,395.6 | -9.7 | 1,412.1 | 6.0 | 743.3 | 2.9 |
| Leisure: Yeongdeungpo | -8,840.9 | -17.0 | -11,531.7 | -26.3 | -2,034.3 | -7.1 | -861.6 | -3.2 | 1,204.6 | 4.4 |
| Leisure: Hyehwa | -8,924.0 | -20.8 | -9,207.7 | -26.5 | -3,263.0 | -14.4 | 991.0 | 5.1 | 381.1 | 1.8 |
| Leisure: Itaewon | -3,462.3 | -20.5 | -3,729.1 | -24.1 | -378.3 | -3.9 | 54.0 | 0.6 | -357.7 | -3.6 |