{"coeffs": [-9.335892734481209e-08, 0.2265462812454271, 1.9101786303530328, 0.12703311501938153], "function": "fpl = lambda t, Cl, Cu, A, k: (Cl + ((Cu - Cl) / (1 + numpy.exp((A - t) / k))))", "log_ftol": 1e-06, "errors": [6.04805739590284e-08, 695.7476769006139, 392.3821487510335, 0.010390506215354367], "covariance": [[3.6578998264135044e-15, -2.775934378266614e-05, -1.5656435964600077e-05, -4.926794835459654e-10], [-2.775934383817061e-05, 484064.829912601, 272998.9676496127, 6.932556676412456], [-1.5656435995512494e-05, 272998.9676495614, 153963.75065847818, 3.909855721548281], [-4.926794840483487e-10, 6.932556671380688, 3.909855718710445, 0.00010796261941131772]]}