{"coeffs": [-1.2086169942453342e-07, 4.253164136641881e-06, 0.6593365221382137, 0.22196873036345383], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [1.8989072256823469e-07, 2.1845690615635227e-06, 0.19971534339667119, 0.07869806183442944], "covariance": [[3.6058486517486274e-14, -3.6142704354956447e-13, -3.2523868581023585e-08, -1.4228122836243788e-08], [-3.6142704354956573e-13, 4.77234198474053e-12, 4.357839184417913e-07, 1.669328399271765e-07], [-3.252386858102374e-08, 4.357839184417913e-07, 0.039886218388050294, 0.015204521051922017], [-1.4228122836243816e-08, 1.6693283992717627e-07, 0.015204521051921993, 0.006193384936495679]]}