{"coeffs": [-7.570479935274285e-07, -2.7379744907636178e-08, -0.20395031866671376, 0.04695412686921074], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [7.65899497868053e-08, 5.115961342564926e-08, 0.028767604241832882, 0.025103149441469734], "covariance": [[5.866020408345358e-15, -4.504811562645967e-16, 1.0441636948052985e-09, -9.368642126520465e-10], [-4.504811562645965e-16, 2.6173060458618718e-15, 4.185183061869616e-10, 4.5842084790627555e-10], [1.0441636948052985e-09, 4.1851830618696165e-10, 0.0008275750538147213, -9.196493768208766e-05], [-9.368642126520462e-10, 4.5842084790627555e-10, -9.196493768208763e-05, 0.0006301681118807622]]}