{"coeffs": [-1.1362758682286136e-07, 7.188221243646386e-10, -0.2983485495561403, 0.012853611807470598], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [2.117314261413164e-08, 1.2630253714822669e-08, 0.022927322276729122, 0.03163135471730469], "covariance": [[4.483019681583572e-16, -1.190524600759846e-17, 1.0809625719701993e-10, -1.7842836050177335e-10], [-1.190524600759846e-17, 1.5952330890079184e-16, 5.135935258993857e-11, 8.100199522388477e-11], [1.0809625719701994e-10, 5.135935258993857e-11, 0.0005256621067809995, 9.501042228993238e-05], [-1.7842836050177332e-10, 8.100199522388477e-11, 9.501042228993238e-05, 0.0010005426012519535]]}