Because of appearing consecutive primes of any class independently
Besides,
Total number of such groups equal to the half of the total number of primes
Number of G 0 equal to the total number of groups of primes of the same class, i.e. to the half of the total number of primes
Number of V 0 equal to the total number of single primes, i.e. 1/4 of all variations
So,
the ratio of V+ or V-
to V0
and, the same,
the ratio of coefficients for V~ and V0 in the formula of distribution of proportions of variations' absolute values for the infinite set of primes is
equal