{"coeffs": [3.217511572514113e-07, 1.575464798151563, 1.9686021416371495, 0.13738659612368884], "function": "fpl = lambda t, Cl, Cu, A, k: (Cl + ((Cu - Cl) / (1 + numpy.exp((A - t) / k))))", "log_ftol": 1e-06, "errors": [8.597721630491795e-07, 4618.6176357321165, 404.3366118314597, 0.01525605093263282], "covariance": [[7.392081723542649e-13, -0.002760425915795057, -0.0002416799243187981, -1.0696446167800569e-08], [-0.0027604259188635724, 21331628.865095727, 1867476.1962594553, 67.70024696467082], [-0.00024167992458596976, 1867476.1962591792, 163488.09566734452, 5.926990222083734], [-1.0696446173946607e-08, 67.70024693658074, 5.926990219627063, 0.00023274709005908673]]}