{"coeffs": [-1.2435932089183983e-07, 5.141607118112213e-09, -0.24625166105688165, 0.012173549876804607], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [2.680061236662096e-08, 1.8766320218064245e-08, 0.03545671524565362, 0.02378687048943554], "covariance": [[7.182728232258764e-16, -5.61415202773306e-18, 2.0998325649788624e-10, -1.0226304864453708e-10], [-5.614152027733064e-18, 3.521747745269269e-16, 1.4359890161716574e-10, 8.909372726003366e-11], [2.0998325649788622e-10, 1.4359890161716577e-10, 0.0012571786560113662, 0.0002442102210866864], [-1.0226304864453708e-10, 8.909372726003366e-11, 0.0002442102210866864, 0.0005658152076811793]]}