Table 3.

Cross-validated total R², spatial R², temporal R², and corresponding MSE between monitored and predicted ozone in each year divided by U.S. Census Divisions.

Year	New England	Middle Atlantic	East North Central	West North Central	South Atlantic	East South Central	West South Central	Mountain	Pacific	National
2000	0.70	0.81	0.79	0.74	0.78	0.74	0.79	0.77	0.80	0.79
2001	0.70	0.83	0.81	0.73	0.79	0.74	0.76	0.73	0.78	0.78
2002	0.74	0.85	0.85	0.76	0.82	0.79	0.76	0.74	0.78	0.80
2003	0.68	0.81	0.81	0.70	0.77	0.74	0.76	0.76	0.78	0.77
2004	0.63	0.81	0.77	0.71	0.76	0.72	0.76	0.74	0.78	0.76
2005	0.69	0.82	0.81	0.76	0.79	0.74	0.76	0.73	0.76	0.78
2006	0.71	0.82	0.79	0.74	0.76	0.72	0.77	0.73	0.76	0.77
2007	0.69	0.82	0.82	0.73	0.78	0.75	0.77	0.73	0.75	0.77
2008	0.71	0.82	0.77	0.69	0.80	0.73	0.74	0.72	0.76	0.76
2009	0.72	0.78	0.77	0.72	0.75	0.75	0.76	0.69	0.77	0.76
2010	0.71	0.80	0.72	0.69	0.76	0.68	0.74	0.68	0.75	0.74
2011	0.66	0.78	0.75	0.67	0.75	0.72	0.77	0.68	0.75	0.75
2012	0.69	0.82	0.81	0.78	0.75	0.76	0.75	0.74	0.77	0.78
Mean	0.60	0.73	0.69	0.62	0.68	0.62	0.69	0.67	0.73	0.70