{"coeffs": [-4.530584863009118e-07, -3.2756735899407554e-08, -0.20634374632062877, 0.03288879219626205], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [3.094672130352454e-08, 2.243100356601918e-08, 0.018004263208627247, 0.015637114578334114], "covariance": [[9.576995594380199e-16, -4.6809859454691706e-17, 2.136949222525448e-10, -1.8260409106794452e-10], [-4.680985945469167e-17, 5.031499209787653e-16, 1.0708878668303428e-10, 1.0005509808176173e-10], [2.136949222525448e-10, 1.0708878668303427e-10, 0.00032415349368552864, -1.935873955643643e-05], [-1.8260409106794455e-10, 1.0005509808176177e-10, -1.9358739556436412e-05, 0.00024451935233594927]]}