{"coeffs": [-8.802898951772385e-07, -3.825414219159972e-08, -0.3392927515321214, 0.05699126393446365], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [2.0035268625852856e-07, 5.582644771910074e-08, 0.04687948008940172, 0.037263966359249154], "covariance": [[4.014119889100838e-14, -2.207350364090563e-15, 7.380194628174607e-09, -5.46150803229221e-09], [-2.2073503640905635e-15, 3.1165922649334876e-15, 1.9982462539747488e-10, 7.801871871254737e-10], [7.380194628174607e-09, 1.9982462539747488e-10, 0.0021976856534526128, -0.0009104689764367096], [-5.46150803229221e-09, 7.801871871254738e-10, -0.0009104689764367096, 0.0013886031888232526]]}