{"coeffs": [-2.594367239408986e-07, -2.0123552000973786e-09, -0.30538984524013235, 0.0775669304674094], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [7.81582500332814e-08, 2.223631815739849e-08, 0.07254239965971761, 0.05663269076749933], "covariance": [[6.108712048264933e-15, -4.948595045501871e-16, 4.728875996712912e-09, -3.4625360279825617e-09], [-4.948595045501875e-16, 4.944538451970498e-16, 2.3307680709031985e-11, 6.106182601407901e-10], [4.728875996712912e-09, 2.330768070903256e-11, 0.005262399748390197, -0.002401549790766758], [-3.4625360279825625e-09, 6.1061826014079e-10, -0.002401549790766759, 0.0032072616635672032]]}