variance           82 old_code/tumor_growth/tumor_growth.h     explicit Initial_data_u(const double mean_value, const double variance)
variance           83 old_code/tumor_growth/tumor_growth.h       : random_fun (std::bind(Random_dist {mean_value, variance},
variance          103 old_code/tumor_growth/tumor_growth.h     explicit Initial_data_w(const double mean_value, const double variance)
variance          104 old_code/tumor_growth/tumor_growth.h       : base {mean_value}, pertubation {variance}