{"coeffs": [-1.841594233649858e-07, -9.986357244130124e-09, -0.21375941723037215, 0.024116655336761796], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [3.277396698786788e-08, 2.396463565689146e-08, 0.039887968426519864, 0.03489071289608829], "covariance": [[1.0741329121218534e-15, -3.610716633669558e-17, 4.272874851329606e-10, -3.5753599516880785e-10], [-3.6107166336695575e-17, 5.743037621675536e-16, 2.2494384983569196e-10, 2.000655173093358e-10], [4.2728748513296064e-10, 2.2494384983569198e-10, 0.0015910500251950456, -5.346953491745673e-05], [-3.575359951688078e-10, 2.000655173093358e-10, -5.346953491745674e-05, 0.0012173618463972619]]}