{"coeffs": [-4.780402577730128e-07, 0.10068907241440513, 4.640483685453758, 0.3760311199396031], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [1.7823326662192797e-06, 19557.02283618112, 73129.1113500879, 1.4314660820026908], "covariance": [[3.176709733072326e-12, -0.03433507907492205, -0.1283887349554049, -2.541036125941677e-06], [-0.03433508319289624, 382477142.2149098, 1430187700.4529023, 27894.11284664493], [-0.12838875035029285, 1430187700.435556, 5347866926.853556, 104303.9497121945], [-2.5410362783396475e-06, 27894.111199443283, 104303.94355426524, 2.0490951439241343]]}