nts

   res.p_value_mean_total       p value of [mean value for all samples ~= total mean]
   res.p_value_mean_a           p value of [mean value for 1st variant ~= total mean]
   res.p_value_mean_b           p value of [mean value for 2nd variant ~= total mean]
   res.p_value_mean_delta       p value of [difference between values for both variants
                                           ~= difference between values from shuffled variants]

   res.mean_total_significant   Significant elements for mean va