{"coeffs": [-2.0146762423285683e-06, 2.010061917730259e-05, 0.4639483992707743, 0.21262471999271926], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [5.125951135583225e-07, 1.4070769191776117e-06, 0.021211985681479542, 0.020022608356507068], "covariance": [[2.627537504438696e-13, -6.210753714690411e-13, -7.469764333482744e-09, -9.782334679037781e-09], [-6.210753714690401e-13, 1.979865456482359e-12, 2.8601815448569443e-08, 2.714480002815453e-08], [-7.469764333482724e-09, 2.8601815448569423e-08, 0.00044994833655129306, 0.0003654514824399224], [-9.782334679037776e-09, 2.714480002815455e-08, 0.00036545148243992295, 0.0004009048453980666]]}