{"coeffs": [-4.850055640988936e-08, -2.0224116704294925e-09, -0.296794102635609, 0.0021742720757289666], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [1.3060424275791574e-08, 7.9981456219653e-09, 372151.03817255, 212777.75376908027], "covariance": [[1.7057468226368587e-16, 4.6885115115255355e-27, 2.5152260710524427e-11, -8.288520739556706e-12], [5.584923792439784e-27, 6.397033339016268e-17, 2.5816448075020343e-05, 1.4760580296558989e-05], [2.5152260710524427e-11, 2.5816448075020343e-05, 138496395212.90674, 79185461965.1864], [-4.192043451754071e-12, 1.4760580093721413e-05, 79185461965.1864, 45274372499.01535]]}