{"coeffs": [-6.967462917836682e-08, -4.2877893808474035e-10, -0.22227155287702297, 0.01577786632913125], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [3.503305670507284e-08, 2.4771551864274757e-08, 0.08707494624364445, 0.07703392738017831], "covariance": [[1.2273150621008487e-15, -2.4531967472489297e-17, 9.39728971412481e-10, -7.923975357160419e-10], [-2.4531967472489272e-17, 6.136297817644543e-16, 3.578382219326495e-10, 3.021189540637329e-10], [9.39728971412481e-10, 3.5783822193264945e-10, 0.007582046263333571, -0.001428906987639806], [-7.923975357160418e-10, 3.021189540637329e-10, -0.001428906987639806, 0.005934225967614585]]}