. 2021 Dec 16;2(3):206–222. doi: 10.1021/acsenvironau.1c00029

Table 1. Design Values (DV)^a at Chicago and Detroit O₃ Monitoring Sites.

Chicago			Detroit
monitor location	2016 DV (ppb)	2020 DV (ppb)	monitor location	2016 DV (ppb)	2020 DV (ppb)
Kenosha	77	74	Port Huron	73	71
Northbrook	71	77	New Haven	72	71
O’Hare	69	73	Warren	67	68
Cicero	66	71	East 7 Mile	72	71
Morton Arboretum	68	71	Oak Park	69	72
Lemont	69	71	Ypsilanti	67	67
Hammond	65	66	Allen Park	65	67
Gary	67	70

Design values are the 3 year average of the 4th highest MDA8 at each site, the regulatory metric for determining whether the site is meeting the O₃ standard. The 2015 O₃ NAAQS (or O₃ standard) is set at 70 ppb in the United States.

Table 1. Design Values (DV)a at Chicago and Detroit O3 Monitoring Sites.

Table 1. Design Values (DV)^a at Chicago and Detroit O₃ Monitoring Sites.