K2 Campaign 19 data of K2-141. Upper panel: the full K2 Campaign 19 observations. We removed outliers and data suffering from decreased photometric precision due to Kepler running out of fuel (marked in orange). Middle panel: K2 C19 data with instrumental systematics removed using the SFF algorithm. Lower panel: the K2 C19 observations after removal of the stellar variability. The 25 transits by K2-141 b have been marked in green. An additional transit by K2-141 c is denoted in red.