{"coeffs": [-3.256885150888594e-08, 1.4083225186809192e-08, -0.07344778023742543, 0.0005415718926886093], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [7.794108255369567e-08, 8.174529842972609e-08, 3150058.9622760643, 149708.15754880224], "covariance": [[6.074812349642003e-15, 3.7673780767811646e-31, 0.02232913741899309, -0.001194788537558809], [3.4775797631826137e-31, 6.682293815364979e-15, 0.07368615881773094, 0.0034499520742800904], [0.0223291374189931, 0.07368615881773094, 9922871465815.754, 365771608551.8893], [-0.0011947885375588095, 0.00344995207428009, 365771608551.8893, 22412532436.656994]]}