Angular correlation function in the AKARI All-Sky Survey North—comparison of subsamples with different limits of flux density S90. Points correspond to the measurements in the logarithmic bins and lines show the best power-law fit. Full triangles and the solid line correspond to the whole sample, i.e. S90 > 0.2 Jy. Full circles and the short-dashed line correspond to the sample with a limit S90 > 0.5 Jy. Open circles and the dotted line correspond to the sample limited by S90 > 1 Jy. The brightest sample S90 > 1.5 Jy is shown by open squares and the long-dashed line. Error bars are ensemble errors, in all cases, bar the one for the brightest sample (S90 > 1.5 Jy), where three possible error bars: Poissonian (central error bar), analytical estimations for ensemble (left error bar) and bootstrap (right error bar) are shown.