{"coeffs": [-4.7660522947804775e-07, -2.4781113138216214e-08, -0.30969450756883415, 0.02306045072482169], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [3.61887168485084e-08, 1.87168460910833e-08, 0.01339765349457231, 0.011383383668472073], "covariance": [[1.3096232271415157e-15, -3.226241563643448e-17, 1.9780619135897234e-10, -1.5692803148309033e-10], [-3.226241563643447e-17, 3.503203275973002e-16, 4.8682368050205304e-11, 4.4155913705747925e-11], [1.9780619135897234e-10, 4.86823680502053e-11, 0.0001794971191606256, -1.8343408614888965e-05], [-1.5692803148309033e-10, 4.4155913705747925e-11, -1.834340861488896e-05, 0.0001295814237436367]]}