{"coeffs": [-1.3949415224176484e-07, -8.170351025367978e-10, -0.26170348112018216, 0.0008744827612383851], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [2.961387111907104e-08, 2.0230119864021604e-08, 275591.61843652825, 215432.90904722712], "covariance": [[8.769813626569498e-16, 1.064924127696444e-32, -3.771721505574661e-11, 3.5009772483441814e-11], [3.194772383089332e-32, 4.092577497126815e-16, -6.286202509291101e-11, 5.840764381478421e-11], [-2.5144810037164405e-11, -3.771721505574661e-11, 75950740152.46498, -59371504068.8147], [2.5144810037164405e-11, 3.771721505574661e-11, -59371504068.81471, 46411338300.550835]]}