{"coeffs": [-2.2287329622097314e-07, 2.4851982154351798e-09, -0.36199971293134425, 0.006129576876895996], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [2.3084262515477856e-08, 1.1190312418438592e-08, 0.04228548590301813, 0.023511900878500202], "covariance": [[5.32883175883496e-16, -8.020221040649322e-19, 6.396585636590274e-11, -2.0275810841735002e-11], [-8.020221040649178e-19, 1.2522309202226098e-16, 1.1169966732261186e-10, 6.09878320485146e-11], [6.396585636590281e-11, 1.1169966732261182e-10, 0.001788062318054345, 0.0009603193115251305], [-2.0275810841734886e-11, 6.09878320485146e-11, 0.0009603193115251306, 0.0005528094829204186]]}