Hα spectra of low-lying loops and spicules. Taken from events A and B from Fig. 1, compared with the mean spectrum averaged over the field of view of the panels in Fig. 1 and the whole time sequence (black dashed line). The spectra of the low-lying loops (blue lines) and spicules (red lines) were observed at the locations of the red crosses and plus signs, respectively. Arrows indicate knees in the profiles.