Figure 9.12: This graph shows a series of jackknifed experimental semivariograms and the associated uncertainties (95% confidence level). Circles represent individual lag/ points for jackknifed (all but one data point used) experimental semivariograms. Squares represent individual lag/ points for full (all data points used) experimental semivariograms. The error bars show the variance at each lag for the mean lag distance, and the mean value. The gray-horizontal-dashed band describes the 95% of the variance for all the jackknifed data sets. The central dashed line in this band is the variance for the full data set.