Flare duty cycle (flare time fraction, left y-axis) of Hα (blue bars) and Paβ flares (red bars) for automatically detected flares along with fractions of stars per spectral subtype (right y-axis) with automatically detected Paβ flares (black dots) and all Paβ flares (i. e. including visually found flares; grey dots). The fractions of flaring stars for spectral types M0.5, M1.5, and M3.0 each correspond to a single star with a flare detection.