{"coeffs": [-2.1384458337612574e-08, 7.925396681402182e-07, 0.3715575155581385, 0.09865559688498723], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [7.996690597680277e-08, 3.4406590370906414e-07, 0.07694413032466171, 0.053727858412760066], "covariance": [[6.394706051502813e-15, -2.2207787562205912e-14, -4.229563234186053e-09, -3.958000700566017e-09], [-2.2207787562205947e-14, 1.18381346095135e-13, 2.5930942542046192e-08, 1.7625406912850965e-08], [-4.22956323418606e-09, 2.5930942542046192e-08, 0.005920399191418527, 0.0036953446283637696], [-3.958000700566019e-09, 1.7625406912850955e-08, 0.003695344628363767, 0.0028866827696215924]]}