{"coeffs": [-5.403778663452901e-07, 1.0957572062507015e-05, 0.35386422309808285, 0.11253589019272639], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [9.32464925243462e-07, 1.3363790366599031e-05, 0.2866415819235049, 0.12122593268711347], "covariance": [[8.694908368092953e-13, -5.8422124551184565e-12, -1.0911276729787882e-07, -7.135794204292525e-08], [-5.8422124551184565e-12, 1.7859089296240505e-10, 3.7859911760023467e-06, 1.4732268921020063e-06], [-1.0911276729787885e-07, 3.7859911760023467e-06, 0.08216339648760938, 0.03127755619145423], [-7.13579420429253e-08, 1.4732268921020061e-06, 0.03127755619145422, 0.014695726755860566]]}