Ranges between 0 (worst score) and 1 (best score). The best score is achieved when the median of 'x' is close to the center of the interval [-tol, tol]. If median of 'x' is close to the border (on either side), the score decreases linearly to zero. Can be used for uncalibrated mass errors, as a measure of how well they are centered around 0.
qualCenteredRef(x, tol)Vector of values (hopefully in interval [-tol, tol])
Border of interval (must be positive)
Value between [0, 1]
NA's are removed for all computations.