{"coeffs": [-1.5233532134709345e-07, -4.831647806265884e-10, -0.3493017231772087, 0.025466091725235347], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [3.733287525257932e-08, 1.5718722192931908e-08, 0.03767412531693147, 0.03216720117101902], "covariance": [[1.3937435746246493e-15, -3.6694710606691765e-17, 6.859616045023339e-10, -5.517618507937086e-10], [-3.669471060669176e-17, 2.4707822737857014e-16, 1.0578215841728315e-10, 1.0928917516118094e-10], [6.85961604502334e-10, 1.0578215841728316e-10, 0.0014193397183958568, -0.00022665235011394823], [-5.517618507937086e-10, 1.0928917516118094e-10, -0.00022665235011394823, 0.0010347288311768075]]}