w = [0.0013890136986770077, 0.003890461127099884,
               0.0066307039159312926, 0.009273279659517764,
               0.011823015253496341, 0.014369729507045804, 0.01692088918905327,
               0.019414141193942382, 0.021828035821609193, 0.0241911620780806,
               0.0265099548823331, 0.02875404876504129, 0.030907257562387762,