{"coeffs": [-7.591948100079894e-07, 0.5409367498854543, 2.1556662744767774, 0.16835521683441776], "function": "fpl = lambda t, Cl, Cu, A, k: (Cl + ((Cu - Cl) / (1 + numpy.exp((A - t) / k))))", "log_ftol": 1e-07, "errors": [2.1679699287481186e-06, 2269.0396887941943, 708.9675448332448, 0.05663305217626276], "covariance": [[4.700093611956123e-12, -0.003833151590295116, -0.001197821391027049, -1.0851376160224982e-07], [-0.003833151591531409, 5148541.109323253, 1608675.4693456534, 124.2132396428515], [-0.001197821391413285, 1608675.4693455028, 502634.9796268789, 38.81267550222761], [-1.0851376162051841e-07, 124.21323962634168, 38.81267549707571, 0.0032073025987992996]]}