{"coeffs": [-8.263505111262226e-06, 1.2364233377818724e-05, 0.15319065996971634, 0.5729751324180508], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [6.195042425209912e-06, 3.38923467102058e-06, 0.16608644178971374, 0.2630197042371905], "covariance": [[3.8378550650150705e-11, -2.0559890779255606e-11, 1.0007943763858486e-06, -1.6208105120267906e-06], [-2.0559890779257396e-11, 1.148691165524798e-11, -5.096580232900577e-07, 8.866158644589196e-07], [1.000794376385748e-06, -5.096580232899572e-07, 0.027584706146367974, -0.04124417123685423], [-1.6208105120268594e-06, 8.866158644588809e-07, -0.04124417123686026, 0.06917936481701917]]}