{"coeffs": [-7.988911325916492e-08, -3.828595172696065e-09, -0.25039013736212395, 0.02236067897335968], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [2.3536801524752737e-08, 1.5108625012444234e-08, 0.05807907616404874, 0.05171027602851115], "covariance": [[5.539810260156028e-16, -1.627336566300712e-17, 4.678549036586722e-10, -3.98925080127469e-10], [-1.6273365663007117e-17, 2.282705497666555e-16, 1.8686022466294485e-10, 1.7353145758598442e-10], [4.678549036586722e-10, 1.8686022466294482e-10, 0.0033731790880693747, -0.00017525782647130972], [-3.9892508012746904e-10, 1.7353145758598442e-10, -0.00017525782647130972, 0.002673952646944815]]}