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

Table 4

Coefficient of determination 𝑅² of linear regression functions 𝑓 between 1 h mean values of different human-biometeorological variables, basis: experimental investigations on typical Central European summer days in various urban quarters of Freiburg from 2007–2010 (𝑛: number of values).

function 𝑓	𝑅^2
	10–16 CET; 𝑛 = 200	22–5 CET; 𝑛 = 40
PET = 𝑓 (𝑇mrt)	0.892	0.616
PET = 𝑓 (𝑇𝑎)	0.589	0.892
PET = 𝑓 (VP)	0.023	0.006
PET = 𝑓 (𝑣)	0.029	0.013
𝑇mrt = 𝑓 (𝑇𝑎)	0.308	0.825