Figure to replace Fig. 6a and b in Theissen et al. (1993). a) Average distribution of the statistically complete sample perpendicular to the galactic plane, created by 10 000 Monte Carlo simulations. b) Regression of lnN_i−2lnz_i to determine the scale height which follows from the negative inverse of the slope. N_i denotes the number of stars in bin i, z_i the distance. The full drawn line is the least square fit, weighted with the inverse errors; the dashed lines are extreme fits giving the errors in scale height.