The behaviour of the correlation coefficient for different redshift pairs (z_i,z_j) ∈  { (30,10);(30,5);(30,1);(30,0) }  for all the six wavelet levels. The solid and dashed lines correspond to the under- and overdensities, respectively (10% of the most under/over-dense cells). We see that for the largest smoothing scale, i.e. w6, all the correlators stay quite close to r = 1, while later on, as the other redshift decreases below z = 30, the lines start to deviate from r = 1. Thus, on the largest scales the information is approximately preserved, while on the smallest scales the information gets gradually erased.