{"coeffs": [-1.8264099981003125e-06, 1.4465397978411507e-05, 0.42206418079582947, 0.2140007919796208], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [4.796479960810132e-07, 9.525095271502683e-07, 0.017553372285954206, 0.021739670446601706], "covariance": [[2.3006220014453163e-13, -3.941815962166068e-13, -4.690627874383284e-09, -9.962964571125783e-09], [-3.9418159621660897e-13, 9.072743993120278e-13, 1.499069391916631e-08, 1.9929584082699936e-08], [-4.690627874383349e-09, 1.499069391916638e-08, 0.00030812087860930515, 0.0002899125583049666], [-9.962964571125808e-09, 1.9929584082699887e-08, 0.0002899125583049643, 0.00047261327112684757]]}