{"coeffs": [-3.478547911300784e-08, 0.009344360537570795, 3.9933138088457296, 0.2683476882632453], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [7.563094600794988e-08, 4612.614788492346, 132476.70600069017, 1.1268427823079843], "covariance": [[5.72003999405743e-15, -0.00033954318002552025, -0.009751881424735723, -8.45568758039897e-08], [-0.0003395431800313259, 21276215.187018286, 611064013.1947694, 5165.895910505293], [-0.009751881424235167, 611064013.1947695, 17550077632.793297, 148367.40465250402], [-8.45568758024218e-08, 5165.895910505294, 148367.404652504, 1.2697746560395995]]}