{"coeffs": [-3.3319270877554677e-07, -1.3027050193301916e-08, -0.07125362537710983, 0.031275506512883695], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [4.827685795055449e-08, 5.257062714916525e-08, 0.044762713298237514, 0.03891296579280284], "covariance": [[2.330655013578016e-15, -1.52858401961411e-16, 6.379911909577067e-10, -5.642907107934816e-10], [-1.52858401961411e-16, 2.7636708388565505e-15, 7.647516370664252e-10, 6.624493490381658e-10], [6.379911909577067e-10, 7.647516370664252e-10, 0.0020037005018202093, 2.9002981073442694e-05], [-5.642907107934816e-10, 6.624493490381658e-10, 2.9002981073442694e-05, 0.001514218906791844]]}