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x <- as.numeric(flu1$Date)
y <- flu1$Paraguay
a <- lowess(x,y,f=2/3)
yhat <- a$y
r <- y-yhat
rplus <- lowess(x[sign(r)==1],yhat[sign(r)==1],f=2/3)$y
rminus <- lowess(x[sign(r)==-1],yhat[sign(r)==-1],f=2/3)$y
plot(x,y,xlab="Anteil Winterschlaf [%]",ylab="Alter zum Todeszeitpunkt [Tage]")
x <- as.numeric(flu1$Date)
y <- flu1$Paraguay
yhat <- trend3$fitted
r <- trend3$residuals
rplus <- lowess(x[sign(r)==1],yhat[sign(r)==1],f=2/3)$y
rminus <- lowess(x[sign(r)==-1],yhat[sign(r)==-1],f=2/3)$y
plot(x,y,xlab="Anteil Winterschlaf [%]",ylab="Alter zum Todeszeitpunkt [Tage]")
lines(x[sign(r)==1],yhat[sign(r)==1]+rplus)