figure 1
PM 10 1991-01-01 to 2005-12-31
weekly cycle
p-value < 2.2e-16, Wilcoxon rank sum test with continuity correction one side (W = 118229)
seite9 in pdf PM10

fidure 2
periodogram (smoothed)
seite 15 in pdf PM10

figure 3
weekly cycle
seite 9 in pdf tmp

figure 4
seite 15 in pdf temp

figure 5
random simulation (5000 times) distribution with the same numbers of entrys and sd as the original one.
seite 18 in pdf temp