{"coeffs": [-4.2110979174392e-07, 0.17702298591679222, 2.219175608224474, 0.14651759817309692], "function": "fpl = lambda t, Cl, Cu, A, k: (Cl + ((Cu - Cl) / (1 + numpy.exp((A - t) / k))))", "log_ftol": 1e-08, "errors": [4.290251553196154e-07, 33591.61710711674, 28050.43431638502, 0.27645527908857476], "covariance": [[1.8406258389702012e-13, -0.010077506016993556, -0.00841533911754081, -9.7163090782632e-08], [-0.010077506012186719, 1128396739.871138, 942259448.8045235, 8923.584040115378], [-0.008415339112389928, 942259448.8045475, 786826865.3378304, 7451.639168623889], [-9.716309074912333e-08, 8923.584042239632, 7451.639170408159, 0.07642752133594176]]}