Data used to produce figures in the manuscript ÔMaximizing Ozone Signals Among Chemical, Meteorological, and Climatological VariabilityÕ by Brown-Steiner, B., Selin, N. E., Prinn, R. G., Monier, E., Tilmes, S., Emmons, L., Garcia-Menendez, F.

Figure 2
Each subplot has an associated R-Project .RData file, as described below:

Òfigure2a.RDataÓ:		CAM-chem (MOZ_2000) Mean
Òfigure2b.RDataÓ:		Contains the following variables:
	cnt_we_o3_matched:	CASTNET, Western US, MDA8 O3 JJA 2000
	cnt_ne_o3_matched:	CASTNET, Northeastern US, MDA8 O3 JJA 2000
	cnt_se_o3_matched:	CASTNET, Southeastern US, MDA8 O3 JJA 2000
	cnt_mw_o3_matched:	CASTNET, Midwestern US, MDA8 O3 JJA 2000	
	mzb_we_o3_matched:	MOZ_2000, Western US, MDA8 O3 JJA 2000	
	mzb_ne_o3_matched:	MOZ_2000, Northeastern US, MDA8 O3 JJA 2000	
	mzb_se_o3_matched:	MOZ_2000, Southeastern US, MDA8 O3 JJA 2000
	mzb_mw_o3_matched:	MOZ_2000, Western US, MDA8 O3 JJA 2000	
Òfigure2c.RDataÓ:		CAM-chem (MOZ_2000) Standard Deviation
Òfigure2d.RDataÓ:		CAM-chem (MOZ_2000) Variability (%) (See Text)
Òfigure2e.RDataÓ:		2050 CAM-chem (MOZ_2050) Mean
Òfigure2f.RDataÓ:		2150 CAM-chem (MOZ_2050) Mean

Figure 3
We provide individual R-Project .RData files for each of the subplots:

figure3a.RData: 	Continental US Summertime MDA8 O3
figure3b.RData: 	Eastern US Summertime MDA8 O3
figure3c.RData: 	Northeastern US Summertime MDA8 O3
figure3d.RData: 	Single Grid Cell in Northeastern US US Summertime MDA8 O3
figure3e.RData: 	CAM-chem/CASTNET Comparison Summertime Annual Comparison, 1991 - 2014

Figure 4
The Òfigure4.RDataÓ file contains the following variables:

co_cnt_heat      	:  Continental US, CASTNET
co_mzb_heat      	:  Continental US, CAM-chem present day (MOZ_2000)
co_fgm_heat_2050 	:  Continental US, CAM-chem year 2050   (MOZ_2050)
co_fgm_heat_2100 	:  Continental US, CAM-chem year 2100   (MOZ_2100)
ea_cnt_heat      	:  Eastern US, CASTNET
ea_mzb_heat      	:  Eastern US, CAM-chem present day (MOZ_2000)
ea_fgm_heat_2050 	:  Eastern US, CAM-chem year 2050   (MOZ_2050)
ea_fgm_heat_2100 	:  Eastern US, CAM-chem year 2100   (MOZ_2100)
ne_cnt_heat      	:  Northeastern US, CASTNET
ne_mzb_heat      	:  Northeastern US, CAM-chem present day (MOZ_2000)
ne_fgm_heat_2050 	:  Northeastern US, CAM-chem year 2050   (MOZ_2050)
ne_fgm_heat_2100 	:  Northeastern US, CAM-chem year 2100   (MOZ_2100)
n1_cnt_heat      	:  Northeastern US 1x1 grid cell, CASTNET
n1_mzb_heat      	:  Northeastern US 1x1 grid cell, CAM-chem present day (MOZ_2000)
n1_fgm_heat_2050 	:  Northeastern US 1x1 grid cell, CAM-chem year 2050   (MOZ_2050)
n1_fgm_heat_2100 	:  Northeastern US 1x1 grid cell, CAM-chem year 2100   (MOZ_2100)

Figure 5
The Òfigure5.RDataÓ file contains the following variables:

risk_05ppbv_dm8ho3_jja_1yr_CUS  	: 0.5 ppbv threshold and 1 year averaging window
risk_05ppbv_dm8ho3_jja_5yr_CUS 		: 1.0 ppbv threshold and 5 year averaging window
risk_05ppbv_dm8ho3_jja_10yr_CUS		: 2.5 ppbv threshold and 10 year averaging window
risk_05ppbv_dm8ho3_jja_20yr_CUS		: 5.0 ppbv threshold and 20 year averaging window
risk_1ppbv_dm8ho3_jja_1yr_CUS  		: 0.5 ppbv threshold and 1 year averaging window
risk_1ppbv_dm8ho3_jja_5yr_CUS   	: 1.0 ppbv threshold and 5 year averaging window
risk_1ppbv_dm8ho3_jja_10yr_CUS 		: 2.5 ppbv threshold and 10 year averaging window
risk_1ppbv_dm8ho3_jja_20yr_CUS  	: 5.0 ppbv threshold and 20 year averaging window
risk_25ppbv_dm8ho3_jja_1yr_CUS  	: 0.5 ppbv threshold and 1 year averaging window
risk_25ppbv_dm8ho3_jja_5yr_CUS 		: 1.0 ppbv threshold and 5 year averaging window
risk_25ppbv_dm8ho3_jja_10yr_CUS 	: 2.5 ppbv threshold and 10 year averaging window
risk_25ppbv_dm8ho3_jja_20yr_CUS 	: 5.0 ppbv threshold and 20 year averaging window
risk_5ppbv_dm8ho3_jja_1yr_CUS   	: 0.5 ppbv threshold and 1 year averaging window
risk_5ppbv_dm8ho3_jja_5yr_CUS   	: 1.0 ppbv threshold and 5 year averaging window
risk_5ppbv_dm8ho3_jja_10yr_CUS  	: 2.5 ppbv threshold and 10 year averaging window
risk_5ppbv_dm8ho3_jja_20yr_CUS  	: 5.0 ppbv threshold and 20 year averaging window

Figure 6
The Òfigure6.RDataÓ file contains the following variables:

moz_2000_1_1_CUS 	: MOZ_2000, 1 year averaging window, 1.0 ppbv threshold, Continental US
moz_2000_5_1_CUS  	: MOZ_2000, 5 year averaging window, 1.0 ppbv threshold, Continental US
moz_2000_10_1_CUS 	: MOZ_2000, 10 year averaging window, 1.0 ppbv threshold, Continental US
moz_2000_20_1_CUS 	: MOZ_2000, 20 year averaging window, 1.0 ppbv threshold, Continental US
moz_2050_1_1_CUS  	: MOZ_2500, 1 year averaging window, 1.0 ppbv threshold, Continental US
moz_2050_5_1_CUS  	: MOZ_2500, 5 year averaging window, 1.0 ppbv threshold, Continental US
moz_2050_10_1_CUS 	: MOZ_2500, 10 year averaging window, 1.0 ppbv threshold, Continental US
moz_2050_20_1_CUS 	: MOZ_2500, 20 year averaging window, 1.0 ppbv threshold, Continental US
moz_2100_1_1_CUS  	: MOZ_2100, 1 year averaging window, 1.0 ppbv threshold, Continental US
moz_2100_5_1_CUS  	: MOZ_2100, 5 year averaging window, 1.0 ppbv threshold, Continental US
moz_2100_10_1_CUS 	: MOZ_2100, 10 year averaging window, 1.0 ppbv threshold, Continental US
moz_2100_20_1_CUS 	: MOZ_2100, 20 year averaging window, 1.0 ppbv threshold, Continental US

Figure 7
The Òfigure7.RDataÓ file contains the following variables:

risk_05ppbv_1yr_1x1_CUS 	: 0.5 ppbv threshold, 1 year averaging window, 1x1 grid box
risk_05ppbv_5yr_1x1_CUS  	: 0.5 ppbv threshold, 5 year averaging window, 1x1 grid box
risk_05ppbv_10yr_1x1_CUS 	: 0.5 ppbv threshold, 10 year averaging window, 1x1 grid box
risk_05ppbv_20yr_1x1_CUS 	: 0.5 ppbv threshold, 20 year averaging window, 1x1 grid box
risk_05ppbv_1yr_3x3_CUS  	: 0.5 ppbv threshold, 1 year averaging window, 3x3 grid box
risk_05ppbv_5yr_3x3_CUS  	: 0.5 ppbv threshold, 5 year averaging window, 3x3 grid box
risk_05ppbv_10yr_3x3_CUS 	: 0.5 ppbv threshold, 10 year averaging window, 3x3 grid box
risk_05ppbv_20yr_3x3_CUS 	: 0.5 ppbv threshold, 20 year averaging window, 3x3 grid box
risk_05ppbv_1yr_5x5_CUS  	: 0.5 ppbv threshold, 1 year averaging window, 5x5 grid box
risk_05ppbv_5yr_5x5_CUS  	: 0.5 ppbv threshold, 5 year averaging window, 5x5 grid box
risk_05ppbv_10yr_5x5_CUS 	: 0.5 ppbv threshold, 10 year averaging window, 5x5 grid box
risk_05ppbv_20yr_5x5_CUS 	: 0.5 ppbv threshold, 20 year averaging window, 5x5 grid box
risk_05ppbv_1yr_7x7_CUS  	: 0.5 ppbv threshold, 1 year averaging window, 7x7 grid box
risk_05ppbv_5yr_7x7_CUS  	: 0.5 ppbv threshold, 5 year averaging window, 7x7 grid box
risk_05ppbv_10yr_7x7_CUS 	: 0.5 ppbv threshold, 10 year averaging window, 7x7 grid box
risk_05ppbv_20yr_7x7_CUS 	: 0.5 ppbv threshold, 20 year averaging window, 7x7 grid box
risk_05ppbv_1yr_9x9_CUS  	: 0.5 ppbv threshold, 1 year averaging window, 9x9 grid box
risk_05ppbv_5yr_9x9_CUS  	: 0.5 ppbv threshold, 5 year averaging window, 9x9 grid box
risk_05ppbv_10yr_9x9_CUS 	: 0.5 ppbv threshold, 10 year averaging window, 9x9 grid box
risk_05ppbv_20yr_9x9_CUS 	: 0.5 ppbv threshold, 20 year averaging window, 9x9 grid box

Figure 8
The Òfigure8.RDataÓ file contains the following variables:

fig8a 	: Continental US Average
fig8b 	: Example from Southern California Grid Cell
fig8c 	: Example from Northeastern US Grid Cell
fig8d 	: Exaple from Rocky Mountain Grid Cell

Figures S1
The ÒfigureS1.RDataÓ file contains all the variables used to plot Figure S1, with this context:
{region)_risk_{dataset}_{threshold}.

Regions: 
co: Continental US
ea: Eastern US
ne: Northeastern US
n1: Northeastern US, single grid cell

Dataset:
cnt: CASTNET
[]: MOZ_2000
f50: MOZ_2050
f00: MOZ_2100

Threshold:
0.5:	0.5 ppbv
1:	1 ppbv
2.5:	2.5 ppbv
5:	5 ppbv

Figure S2
The ÒfigureS2.RDataÓ file contains all the variables used to plot Figure S1, with this context:
{region)_risk_{dataset}_{threshold}.

Regions: 
se: Southeastern US
s1: Southeastern US, Single Grid Cell
mw: Midwestern US
m1: Midwestern US, Single Grid Cell

Dataset:
cnt: CASTNET
[]: MOZ_2000
f50: MOZ_2050
f00: MOZ_2100

Threshold:
0.5:	0.5 ppbv
1:	1 ppbv
2.5:	2.5 ppbv
5:	5 ppbv

Figure S3
The ÒfigureS3.RDataÓ file contains the following variables:

moz_2000_5_05_CUS 	: MOZ_2000, 5 year averaging window, 0.5 ppbv threshold, Continental US
moz_2000_5_05_ CUS	: MOZ_2050, 5 year averaging window, 0.5 ppbv threshold, Continental US
moz_2000_5_05_ CUS  	: MOZ_2100, 5 year averaging window, 0.5 ppbv threshold, Continental US
moz_2000_5_1_CUS  	: MOZ_2000, 5 year averaging window, 1.0 ppbv threshold, Continental US
moz_2000_5_1_CUS  	: MOZ_2050, 5 year averaging window, 1.0 ppbv threshold, Continental US
moz_2000_5_1_CUS  	: MOZ_2100, 5 year averaging window, 1.0 ppbv threshold, Continental US
moz_2000_5_25_CUS 	: MOZ_2000, 5 year averaging window, 2.5 ppbv threshold, Continental US
moz_2000_5_25_CUS 	: MOZ_2050, 5 year averaging window, 2.5 ppbv threshold, Continental US
moz_2000_5_25_CUS 	: MOZ_2100, 5 year averaging window, 2.5 ppbv threshold, Continental US
moz_2000_5_5_CUS  	: MOZ_2000, 5 year averaging window, 5.0 ppbv threshold, Continental US
moz_2000_5_5_CUS  	: MOZ_2050, 5 year averaging window, 5.0 ppbv threshold, Continental US
moz_2000_5_5_CUS  	: MOZ_2100, 5 year averaging window, 5.0 ppbv threshold, Continental US

Figure S4
The ÒfigureS4.RDataÓ file contains the co_thresh_array. The dimensions of this array are [4,5,25,14] and are [temporal averaging windows (1,5,10,20 years), spatial averaging sizes (1,3,5,7,9 grid boxes), Continental US longitudes, and Continental US latitudes]