{"coeffs": [-4.6850380046603606e-07, -1.7833050203721748e-08, -0.2926240627369845, 0.024333234644264623], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [4.1606005564721915e-08, 2.3493797121797713e-08, 0.01670504357556154, 0.014528496083425832], "covariance": [[1.731059699051671e-15, -5.0152840139321426e-17, 2.698590668650023e-10, -2.2263292071298835e-10], [-5.0152840139321414e-17, 5.519585032001904e-16, 8.192252925482712e-11, 7.664160227021901e-11], [2.6985906686500236e-10, 8.192252925482713e-11, 0.0002790584808614098, -2.134749318853505e-05], [-2.2263292071298835e-10, 7.664160227021902e-11, -2.1347493188535046e-05, 0.00021107719844611975]]}