{"coeffs": [-8.412336604831181e-07, 8.441481986318984e-06, 0.4229679519464588, 0.21200077789400995], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [2.1468358888684512e-07, 8.260743947602885e-07, 0.028601128399576712, 0.020779800119467104], "covariance": [[4.608904333733592e-14, -1.694160904948208e-13, -5.667492770930688e-09, -4.404434144238301e-09], [-1.6941609049482087e-13, 6.823989056785769e-13, 2.3516967393122292e-08, 1.6974225891222424e-08], [-5.667492770930691e-09, 2.351696739312229e-08, 0.0008180245457290736, 0.0005772058617587898], [-4.4044341442383e-09, 1.6974225891222424e-08, 0.0005772058617587898, 0.0004318000930050051]]}