Table 2.

Change of PM₁₀ concentration ^a in period 2 when compared to period 1 at Prinzregentenstrasse and Lothstrasse.

Measurement Station	Summer			Winter
	effect	confidence interval	p-value	effect	confidence interval	p-value
Prinzregentenstr.	−19.63%	(−22.75%, −16.52%)	<0.001	−6.80%	(−10.14 %, −3.47 %)	<0.001
Lothstr.	−5.73%	(−7.71%, −3.74%)	<0.001	−3.18%	(−5.24 %, −1.11 %)	0.003

Note: adjusted for exposure at the reference station, wind direction, day of the week, time of the day and public holidays.