{"coeffs": [-3.5550505616771035e-06, 2.7316713256543618e-05, 0.3647923699011018, 0.16964198296869604], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [1.2260232959058434e-06, 1.6252092414264994e-06, 0.013953868103412632, 0.020817990559723033], "covariance": [[1.5031331221038273e-12, -1.578542658520186e-12, -5.998737090667155e-10, -2.3713461610297204e-08], [-1.5785426585201889e-12, 2.641305078418098e-12, 1.405978252678255e-08, 3.166655404472701e-08], [-5.998737090667548e-10, 1.4059782526782586e-08, 0.00019471043504743645, 0.00010243697303177227], [-2.3713461610297224e-08, 3.166655404472698e-08, 0.00010243697303177164, 0.00043338873094471734]]}