Figure 3 Fit of a threshold AR(3) model to body temperature (standardized data) for the female and the male dormice (a and b respectively). Blue and green points result from the fitted AR(3) model (for female and male respectively) and black lines show the real data. The yellow lines show the threshold value that separates the two AR(3) processes (which equal 31ÂșC for the two sexes). The inner panels show a zoom of an arbitrary chosen subset of the original data set shown by the shaded area.