Mapping Urban Heat Vulnerability of Extreme Heat in Hangzhou via Comparing Two Approaches

Table 3

Assigning HVI values to results of EWA and PCA.

Range (R)	Assigned HVI values
R < M − 1.25 SD	−3
M − 1.75 SD ≤ R < M − 0.75 SD	−2
M − 0.75 SD ≤ R < M − 0.25 SD	−1
M − 0.25 SD ≤ R < M + 0.25 SD	0
M + 0.25 SD ≤ R < M + 0.75 SD	1
M + 0.75 SD ≤ R < M + 1.25 SD	2
M + 1.25 SD ≤ R	3