7 0.41346153846153844 0.4795673076923077 0.32572115384615385 0.3485576923076923
8 0.2920673076923077 0.484375 0.2127403846153846 0.37259615384615385
15 0.23557692307692307 0.4495192307692308 0.27163461538461536 0.12379807692307693