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. Author manuscript; available in PMC: 2020 Nov 8.
Published in final edited form as: Science. 2019 Nov 8;366(6466):723–727. doi: 10.1126/science.aax6832

Fig. 4. Distributions of NO2 columns for each of the four lifetime groups across the study time period.

Fig. 4.

For each box, the middle line indicates the median; the box top and bottom indicate the upper and lower quartiles, respectively; the whiskers indicate the farthest nonoutlier values; and plus (+) symbols indicate outliers.