{"coeffs": [-1.747460057056588e-07, 2.127022911355928e-09, -0.32558162369226856, 0.018725068628837438], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [3.631273849737796e-08, 1.8438916999840196e-08, 0.029987709653241285, 0.026970209481160672], "covariance": [[1.3186149771789553e-15, -2.842514494724871e-17, 3.8638717763842773e-10, -3.2707250438506673e-10], [-2.842514494724869e-17, 3.3999366012699577e-16, 1.0331107423547075e-10, 9.9521453999059e-11], [3.8638717763842773e-10, 1.0331107423547072e-10, 0.0008992627302471005, -2.3196774287915633e-05], [-3.270725043850667e-10, 9.952145399905901e-11, -2.319677428791563e-05, 0.000727392199457689]]}