{"coeffs": [-4.694200256685788e-07, -1.656771879371608e-08, -0.29859242239477335, 0.047596774363463906], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [2.4959127385545412e-08, 1.0552825558980128e-08, 0.011810157033391734, 0.010093196050555434], "covariance": [[6.22958039847883e-16, -3.651820366109863e-17, 1.831877785860741e-10, -1.5248119278611106e-10], [-3.6518203661098627e-17, 1.1136212727826425e-16, 2.3703271334272675e-11, 3.567314200475504e-11], [1.8318777858607415e-10, 2.3703271334272675e-11, 0.00013947980915337223, -3.641618709900924e-05], [-1.5248119278611106e-10, 3.567314200475503e-11, -3.641618709900924e-05, 0.00010187260651494782]]}