{"coeffs": [-3.068579902556706e-08, 7.099217695057057e-08, 0.22760757928889994, 0.18266931482598744], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [4.503700989875378e-08, 2.9482432094042608e-08, 0.07695049309633202, 0.14503166675330856], "covariance": [[2.0283322606204458e-15, -1.24810066965701e-15, 2.965938773525948e-09, -6.428065886261792e-09], [-1.24810066965699e-15, 8.692138021798336e-16, -1.4271314949885828e-09, 4.204057438671973e-09], [2.965938773526028e-09, -1.4271314949886614e-09, 0.0059213783877686416, -0.008429820269595717], [-6.4280658862617435e-09, 4.204057438672007e-09, -0.008429820269595392, 0.02103418436124275]]}