{"coeffs": [-4.907170337197606e-07, -1.1622164887470744e-08, -0.1893329790132604, 0.04569442983362518], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [4.957644515232879e-08, 3.526435855526661e-08, 0.02902684681986893, 0.025343645869797857], "covariance": [[2.457823913941865e-15, -1.8952273894166085e-16, 6.482901816555443e-10, -5.839305426776599e-10], [-1.8952273894166085e-16, 1.2435749843144054e-15, 3.015994432986403e-10, 3.1774576591237905e-10], [6.482901816555443e-10, 3.015994432986403e-10, 0.0008425578363041351, -7.592887954020253e-05], [-5.839305426776599e-10, 3.1774576591237905e-10, -7.592887954020257e-05, 0.000642300385973722]]}