1. Creative Research Project 2012/1
Yoojin Choi
HW2. Info.Visualization
:Seoul Subway Transit Population
Data source : Seoul Metro Transit Population from 1st to 4th lines (Oct.2011)
(http://www.seoulmetro.co.kr/)
Sheet 0.1 & 0.2 : Original data sheets from the data sources before pivoting

2. Why does subway stations population matter?
How many Seoul citizens use inner-city subway lines in everyday?
If you are living in Seoul, you must have experienced once the infamous Seoul ‘지옥철(A Hell in the subway)’
Seoul is obviously one of the global cities which has a huge number of subway lines as well; more than ten lines with
512 stations. Depending on the city area, whether it is metropolis or suburb, the transit population of each station can
be widely varied by times and the stations. Basically, I was wondering how different subway transit population in
Seoul during weekdays and weekends. Are these transit flows similar or different during daytime? By looking at this, it
would be possible to expect,not only the general transit population,but also which stations & lines are the most/least
crowded during weekdays and weekends, and its common characteristics.
Data source : Seoul Metro Transit Population from 1st to 4th lines (Oct.2011)
(http://www.seoulmetro.co.kr/)
Available data type: Stations from 1 to 4 lines, Population by times from 5am to 1am, Get-on&off population

3. Q1. Comparison by times per day : Weekdays vs. Weekends
(Sheet 1.1 & 1.2: Weekdays(ends) by time-lines)
The two most crowded times Summary
same time weekdays/
Top 2 pop. Top1 & 2 Population weekends(rank) The shapes of two are quite
different,in terms of it’s
08-09 796,307 222,442(14) peaked time. While during the
Weekdays
18-19 679,135 363,997(3) weekdays, so-called ‘traffic
jam’ time between 8-9am and
Weekends 17-18 385,170 435,567(6) 6-7pm are the most crowded,
those of weekends aren’t.
16-17 366,519 352,084(7)
1) During Weekdays avg. 343,630 ppl/day 2) During Weekends avg. 256,579 ppl/day
900000" 450000"
800000"
08-09 400000" 16-17
700000" 18-19 350000" 17~18
600000" 300000"
500000" 1" 250000" 1"
Axis%Title%
2" 2"
3" 3"
400000" 200000"
4" 4"
Grand"Total" Grand"Total"
300000" 150000"
200000" 100000"
100000" 50000"
0" 0"
Sum"of" Sum"of" Sum"of" Sum"of" Sum"of" Sum"of" Sum"of" Sum"of" Sum"of" Sum"of" Sum"of" Sum"of" Sum"of" Sum"of" Sum"of" Sum"of" Sum"of" Sum"of" Sum"of" Sum"of" Sum"of" Sum"of" Sum"of" Sum"of" Sum"of" Sum"of" Sum"of" Sum"of" Sum"of" Sum"of" Sum"of" Sum"of" Sum"of" Sum"of" Sum"of" Sum"of" Sum"of" Sum"of" Sum"of"
05~06" 06~07" 07~08" 08~09" 09~10" 10~11" 11~12" 12~13" 13~14" 14~15" 15~16" 16~17" 17~18" 18~19" 19~20" 20~21" 21~22" 22~23" 23~24" 00~01" 05~06" 06~07" 07~08" 08~09" 09~10" 10~11" 11~12" 12~13" 13~14" 14~15" 15~16" 16~17" 17~18" 18~19" 19~20" 20~21" 21~22" 22~23" 23~24"

4. Q2. Comparison by lines: Weekends vs. Weekdays
(Sheet 2 :Weekdays(ends) by lines)
Summary
Amongst total four lines, the
Lines Weekdays Weekends 2nd line rates the highest
1 336,141 258,573 population both in weekdays
and weekends, while the 1st
2 1,843,897 1,267,083 line is the least crowded.
3 625,244 443,880 Between the weekdays and
weekends, each line’s
4 624,369 473,426 population on weekdays shows
one and a half times higher
than that of weekends.
Bar chart Scattered chart

5. Q3. The most & least crowded stations : Weekdays vs. Weekends
(Sheet: 4)
Top 10 Most/least crowded stations list Amongst them,
: Weekdays vs. Weekends ? how many stations are duplicated one another?
(Red box = duplicated)
Summary
Interestingly, except one almost all top rated stations are on the 2nd lines : Gangnam(1),Jamshil(2), Shinrim(3) in
weekdays. On the other hand, in least crowded stations list, there are no one single line is dominant. It seems
there’s a different characteristic in top crowded and least stations : while most of top stations are central city
area(commercial or business district) in network, the least crowded stations are normally only a residential area.
Another difference is found in comparison between weekdays and weekends. Although all lists in 111~120, are
duplicated between weekdays and weekends, the list in the top ten crowded looks quite different. In the
weekdays, most crowded stations are deemed to be the business district. However, many stations in weekdays,
such as Jongro-3ga or Gosok bus-terminal, crowded in weekends, are more like commercial area. This shows the
different characteristic of location where people visit.