{"coeffs": [-6.277793277687822e-07, 0.6825119260387429, 2.0129108405213225, 0.15492298113430314], "function": "fpl = lambda t, Cl, Cu, A, k: (Cl + ((Cu - Cl) / (1 + numpy.exp((A - t) / k))))", "log_ftol": 1e-06, "errors": [1.710601624206089e-06, 1528.760738624282, 348.8700012152496, 0.030986191342704725], "covariance": [[2.9261579167365094e-12, -0.001952505668738403, -0.0004456350037712358, -4.550188341107138e-08], [-0.0019525056702317078, 2337109.3959590606, 533338.748731784, 45.67049470778973], [-0.0004456350041115379, 533338.74873166, 121710.27774792825, 10.422818282663426], [-4.5501883428684214e-08, 45.6704946939768, 10.422818279514885, 0.0009601440539267093]]}