{"coeffs": [-6.271638303714431e-07, -1.2669097552490895e-08, -0.27009731934432624, 0.06537285335320553], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [6.192492771319095e-08, 2.5698049936557575e-08, 0.02515601551218711, 0.0214444632597164], "covariance": [[3.834696672283924e-15, -3.3890450818797503e-16, 1.0873637266744886e-09, -9.126185810247201e-10], [-3.3890450818797494e-16, 6.603897705418067e-16, 1.0479794611117139e-10, 2.376080308217049e-10], [1.087363726674489e-09, 1.0479794611117141e-10, 0.0006328251164493985, -0.00020928806499940735], [-9.126185810247201e-10, 2.376080308217049e-10, -0.00020928806499940732, 0.00045986500449732656]]}