Power spectrum (black dots) calculated for the velocity centroid (top) and the thick slice emission (bottom) over the velocity range −23.1 <v_LSR< 5.2 km s^-1. An average power law γ = −3.35 ± 0.05 for the centroid and respectively γ = −3.41 ± 0.05 for the thick velocity slice was fit for k< 0.07 arcmin^-1 (vertical line). The power law fits for the restricted ranges 0.001 <k< 0.01 arcmin^-1 in spatial frequency are indicated with blue dotted lines. In case of the centroid (top) γ = −4.5 ± 0.1 and γ = −4.9 ± 0.1 for the average emission respectively. In addition the power spectra for 118° < Φ < 133° (red) and 28° < Φ < 43° (green) are given. The average anisotropy factor for 0.007 <k< 0.07 arcmin^-1 is Q_aver = 2.1 for the centroid and Q_aver = 4.1 for the average emission.