Table 1.

List of explanatory variables for assessing the spatial distribution of heat-related mortality exceedances and loadings for extracted principal components

	Component (% Variance Explained)
	1 (35.9)*	2 (16.4)	3 (10.2)	4 (7.7)	5 (5.5)*	6 (4.4)*
ZONING AND LAND USE
% Low Density Residential	-.636	-.290	.122	.398	.017	.088
% Mid Density Residential	-.402	-.456	.012	-.015	-.578	.087
% High Density Residential	.702	.131	-.217	-.079	.449	-.129
% Recreational	-.404	-.438	-.058	.304	.396	-.323
% Industrial	.161	.020	.646	-.420	.229	.161
% Mixed Use	-.073	.142	-.256	.394	.434	.592
% Commercial	.045	.797	-.418	.015	.029	.036
% Building Coverage	.514	.663	-.442	-.053	-.049	-.078
DEMOGRAPHICS
% White	-.647	.610	.361	-.129	.046	-.060
% Black	.471	-.648	-.513	.086	-.071	.051
% American Indian	.655	.039	.457	.287	.012	-.028
% Asian	-.017	.695	-.165	.144	-.244	.099
% Pacific Islander	.400	.271	.255	.656	.003	.181
% Other race	.615	.146	.541	.333	-.079	-.041
% Two or more races	.500	.324	.292	.572	-.334	-.110
% Nonwhite	.647	-.610	-.361	.129	-.046	.060
% Over age 65	-.345	.300	-.003	.142	.159	-.620
% Without hs diploma	.799	-.135	.402	-.191	.107	-.095
Median per capita income	-.651	.455	-.328	.181	.078	-.103
% Below Poverty Line	.912	-.005	.006	.066	.266	.050
% Below 2x Poverty Line	.925	-.115	.060	-.053	.202	-.033
% Living Alone over age 65	-.648	.044	.370	-.187	.095	.177
% Living Alone	-.768	.260	.086	-.085	.200	.247
SURFACE TEMPERATURE
Surface Temp. Image (5/15/2004)	.762	.360	.001	-.332	-.201	.107
Surface Temp. Image (7/29/2008)	.849	.340	-.152	-.261	-.124	.042

Loadings greater than 0.6 or less than -0.6 are shown with bold text and statistically significant components in the regression model are identified with an asterisk