Time series of minimal temperature profiles with adaptive bin size for the first recurring coronal hole wind stream in CR 2041 and in the same format as in Fig. 12. Top left: O and C ion pairs, top right: Mg ion pairs, bottom left: Si ion pairs, and bottom right: Fe ion pairs. All panels refer to a κ-function with κ = 10 as the electron velocity distribution function. Fe-hot and Fe-cool coronal hole wind streams are marked with +-shaped hatching (Fe-hot) and ×-shaped hatching (Fe-cool).