lue for all samples
   res.mean_a_significant       Significant elements for mean value for 1st variant
   res.mean_b_significant       Significant elements for mean value for 2nd variant
   res.mean_delta_significant   Significant elements for difference between values for both variants
    Entries: 1 (for significantly high),  -1 (for significantly low)
   
   res.n_mean_total_significant # significant elements for mean value for all samples
   res.n_mean_a_significant     # significant elements for mean 