Fig. 2From: Cerebellar tonsil ectopia measurement in type I Chiari malformation patients show poor inter-operator reliabilityMean ± 1SD of N = 33 tonsillar position measurements for the seven operators (green = control, red = asymptomatic CM-I patient, blue = symptomatic CM-I patient). Shaded horizontal rectangle indicates TP 3–5 mmBack to article page