{"coeffs": [-3.454089439198003e-08, 3.2682552641659745e-06, 0.5039145925060834, 0.1347830808865239], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [2.9155052515988962e-08, 5.736253796800165e-07, 0.041055400463259374, 0.012529093032638635], "covariance": [[8.500170872100743e-16, -1.495768133620043e-14, -1.0702531994571978e-09, -3.507856186377525e-10], [-1.4957681336200434e-14, 3.2904607621304315e-13, 2.3539579956069188e-08, 7.0259688346034585e-09], [-1.0702531994571971e-09, 2.3539579956069188e-08, 0.0016855459071985978, 0.000503792332271548], [-3.507856186377524e-10, 7.025968834603454e-09, 0.0005037923322715478, 0.00015697817222051397]]}