Fig. 4: Descriptive statistics of the formaldehyde to nitrogen dioxide ratios (FNR) over 2005 to 2019 in the 41 analysed megacities.
From: Ozone trends and their sensitivity in global megacities under the warming climate
Box plots show the median (horizontal line), 25th and 75th percentiles (boxes), and minimum and maximum (whiskers). The abbreviations assigned to megacities are as follows: Los Angeles (LAX), New York City (NYC), Mexico City (MXC), Bogotá (BOG), Lima (LIM), Sao Paulo (SAO), Rio de Janeiro (RIO), Buenos Aires (BAS), Paris (PAR), London (LON), Moscow (MOS), Istanbul (IST), Cairo (CAI), Lagos (LAG), Kinshasa (KSA), Luanda (LUA), Johannesburg (JHB), Tehran (THR), Lahore (LHR), Karachi (KAR), Delhi (DLH), Mumbai (MUM), Bengaluru (BAN), Chennai (CHN), Kolkata (KOL), Dhaka (DHK), Chengdu (CDU), Chongqing (CQG), Xi’an (XIA), Zhengzhou (ZZU), Beijing–Tianjin (BJN), Wuhan (WHN), Yangtze River Delta (YRD), Pearl River Delta (PRD), Bangkok (BKK), Ho Chi Minh City (HCM), Manila (MNL), Jakarta (JKT), Seoul (SEO), Osaka (OSK), Tokyo (KTO).
