{"coeffs": [1.3012763866098634e-08, 0.0005417987833886905, 1.378017051650928, 0.06879880480806105], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [4.488717885666832e-09, 176.22506119372377, 22115.39844657092, 0.4040915421210398], "covariance": [[2.0148588257105313e-17, -3.5441161745914167e-07, -4.447905525567877e-05, -9.93678419845868e-10], [-3.544116181554493e-07, 31055.27219273169, 3897287.4399925973, 68.88092573531604], [-4.44790553452529e-05, 3897287.4399922206, 489090848.4505915, 8644.33501701108], [-9.936784210071396e-10, 68.88092569928799, 8644.335012490566, 0.1632899744137601]]}