What is the oxygen content in Xining, Chinese mainland?

Oxygen is even more important than water and food for human survival. Medical research shows that if the oxygen concentration is reduced to 18%, it will reach the safe limit of human breathing. When the oxygen concentration is only 6%, people will cramp, stop breathing and die.

Under normal circumstances, every 10 liter of air contains about 2.095 liters of oxygen, with a content of about 20.95%. Altitude is closely related to the oxygen content in the air. At an altitude of 0 m, the oxygen content in the air is about 20.95%. At an altitude of 100 m, the oxygen content decreased by 0. 16%, at an altitude of 1000 m, the oxygen content in the air decreased by10.6%, and at an altitude of 5000 m, the oxygen content in the air decreased by 8%.

Table of approximate average altitude and oxygen content of cities

Oxygen content at urban altitude

Beijing 50 meters 20.9%

Guangzhou 18m 20.95%

Shenzhen 40 million 20.9%

Foshan 5 meters 20.95%

Wuhan 25 million 20.9%

Xi' an 397m 20.32%

Shanghai 4 meters 20.95%

Tianjin 5 meters 20.95%

Shantou 4m 20.95%

Dongguan 19m 20.95%

Zhongshan 1 1m 20.95%

Zhuhai 46m 20.9%

Qinhuangdao 18m 20.95%

Harbin 145m 20.7 1%

Changchun 2 16m 20.6%

Shenyang 42 million 20.9%

Dalian 97m 20.79%

Jinan 54 million 20.9%

Qingdao 76 million 20.9%

Nanjing 68 meters 20.9%

Hangzhou10m 20.95%

Nanchang 25m 20.95%

Lanzhou1517m18.55%

Xining 226 1m 17.3%

Taiyuan 800m 19.67%

Nanning 80 meters 20.9%

Hohhot 1035m 19.3%

Chengdu 506m 20. 15%

Chongqing 26 1m 20.53%

Guiyang1071m19.23%

Kunming1891m17.92%

Changsha 60 million 20.9%

Zhanjiang 14m 20.95%

Lhasa 3658m 15.09%

Urumqi 654m 19.9%

Guilin 164m 20.68%

Zhengzhou110m 20.77%

Yuncheng 370 meters 20.35%

Xiamen 63m 20.9%

Hong Kong 32 million 20.93%

Taipei 9 meters 20.95%

Macao 5 meters 20.95%