Fig. 3From: The validity of spatiotemporal gait analysis using dual laser range sensors: a cross-sectional studyHistogram of frequency distribution of estimation errors: a) foot-contact (FC) and b) foot-off (FO) time. Mean and standard deviation of the error are represented as M (SD). The x-axis indicates the estimation errors created by subtracting reference system data from the proposed method data (s), and the y-axis indicates frequency of the errorBack to article page