{"coeffs": [-4.280719579328824e-08, -3.493745415228249e-09, -0.25110285796734144, 0.015983399579588626], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [6.204924429678417e-08, 4.096126656754886e-08, 0.2455987526791533, 0.2597392830662693], "covariance": [[3.850108717802003e-15, -1.0437152553704379e-16, 4.111464624772675e-09, -4.486197489059791e-09], [-1.0437152553704376e-16, 1.677825358817796e-15, 1.8765625148290686e-09, 2.169060722518595e-09], [4.111464624772676e-09, 1.8765625148290686e-09, 0.060318747317555904, 0.00031866993815281465], [-4.48619748905979e-09, 2.169060722518595e-09, 0.00031866993815281465, 0.06746449516777958]]}