{"coeffs": [-8.706867487600942e-08, -1.5787135234907113e-09, -0.3181886692453313, 0.016537545429029233], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [2.1483639615751213e-08, 1.162118613393578e-08, 0.0381015364549895, 0.028746259698390644], "covariance": [[4.615467711394749e-16, -5.887572527762538e-18, 2.9017945108140233e-10, -1.9195760897061098e-10], [-5.887572527762542e-18, 1.3505196715958121e-16, 7.733074545636143e-11, 5.29315716603883e-11], [2.9017945108140233e-10, 7.733074545636144e-11, 0.0014517270802308939, -0.0001344277170331336], [-1.9195760897061098e-10, 5.293157166038829e-11, -0.00013442771703313358, 0.0008263474466473182]]}