{"coeffs": [6.489691803298736e-07, 1.135471534370749, 1.5469109003315005, 0.09397350283184291], "function": "fpl = lambda t, Cl, Cu, A, k: (Cl + ((Cu - Cl) / (1 + numpy.exp((A - t) / k))))", "log_ftol": 1e-06, "errors": [4.927531389903162e-07, 4160.326559212229, 345.89629177861895, 0.011843051950948789], "covariance": [[2.428056559848099e-13, -0.0010776810825179806, -8.960857735744908e-05, -3.806504408063674e-09], [-0.0010776810809229188, 17308317.079286665, 1439041.5220993177, 47.056687259758775], [-8.960857722280292e-05, 1439041.5220995399, 119644.2446661995, 3.9124915596909906], [-3.806504405125866e-09, 47.05668728212863, 3.9124915615517355, 0.00014025787951287192]]}