{"coeffs": [-1.6628248934324338e-07, 1.714667647810537e-09, -0.3247811594666331, 0.018461232329743133], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [4.28331358297775e-08, 2.1894125541239095e-08, 0.037218724949095464, 0.03319371415573944], "covariance": [[1.834677525012169e-15, -3.831013244971215e-17, 5.569009426582675e-10, -4.6374788334725836e-10], [-3.8310132449712134e-17, 4.7935273321553805e-16, 1.53324812968124e-10, 1.4500725193143594e-10], [5.569009426582676e-10, 1.53324812968124e-10, 0.0013852334868364213, -2.053791728405948e-05], [-4.637478833472583e-10, 1.4500725193143594e-10, -2.053791728405948e-05, 0.0011018226594529368]]}