Leaving South Korea: by the numbers

Now that I'm on my way to China, here are some random statistics. (Stats accurate as of arrival in China.)

• Duration spent in the country (not incl. trips abroad): 337
  
  
• Number of passport stamps prior to arrival: 0
  
  
• Number of passport stamps after leaving Korea: 19
  
  • S. Korea: 7
    
    • 1 x alien registration stamp
      
    • 3 x arrival stamp
      
    • 3 x departure stamp
  • P.R. China: 1
    
    • 1 x transit stamp
  • Hong Kong S.A.R.: 6
    
    • 2 x arrival stamp
      
    • 2 x expiry date stamp
      
    • 2 x departure stamp
  • Macau S.A.R.: 3
    
    • 1 x arrival stamp
      
    • 1 x expiry date stamp
      
    • 1 x departure stamp
  • Japan: 2
    
    • 1 x arrival stamp
      
    • 1 x departure stamp

• Number of S. Korean metro cities visited (max. 7): 5
  
  • Seoul
    
  • Incheon
    
  • Busan
    
  • Gwangju
    
  • Daejeon
  
  
  
• Number of S. Korean provinces visited (max. 9, excl. metro cities): 3
  
  • Gyeonggi
    
  • Chungcheongnam
    
  • Jeollanam
  
  
  
• Number of S. Korean cities visited: 14
  
  • Seoul
    
  • Incheon
    
  • Busan
    
  • Gwangju
    
  • Daejeon
    
  • Bucheon
    
  • Yongin
    
  • Namyangju
    
  • Yangpyeong
    
  • Anyang
    
  • Suwon
    
  • Gongju
    
  • Cheonan
    
  • Jeonju
  
  
  
• Number of different electrical outlets encountered: 5
  
  
• Number of customs checkpoints passed: 17
  
  
• New records (or near-records):
  
  • Coldest temperature experienced: -21 C (-6 F)
    
  • Most ground distance traveled in 1 day: 333 km (207 miles): Seoul-Fukuoka one-way
    
  • 2nd most ground distance traveled in 1 day: 331 km (206 miles): Seoul-Gwangju round-trip
    
  • Most consecutive days spent abroad (after Sept. 1): 378 days
    
  • Farthest distance traveled on public transit in 1 day: 120 km (75 miles)