Modification of Human-Biometeorologically Significant Radiant Flux Densities by Shading as Local Method to Mitigate Heat Stress in Summer within Urban Street Canyons

Table 3

Maximal relative reduction Δ of 𝑇_𝑎, 𝑇_mrt, and PET by two shading methods related to the mean values of 𝑇_𝑎, 𝑇_mrt, and PET over 12–15 CET, based on results of both human-biometeorological measuring campaigns in Freiburg during typical Central European summer weather.

Shading methods	Δ𝑇𝑎	Δ𝑇mrt	ΔPET
Shading by a building (July 15, 2007)	6%	47%	31%
Shading by tree canopies (July 24, 2008)	6%	51%	41%