{"coeffs": [-0.6558765919964482, 0.05973701179027558, 0.12597943397843692, 0.043488881648845616], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [9.919102083732395e-08, 2.3730288343190098e-07, 6.291787602613745e-08, 5.5316503280212245e-08], "covariance": [[0.005282487879012991, -0.0018743081497280885, 0.000636342949968932, -0.0009255884837335983], [-0.0018743081497280885, 0.03023429317670448, 0.005081292318864502, 0.0047517482842561465], [0.000636342949968932, 0.005081292318864502, 0.0021254059699998074, 0.0005749259447365241], [-0.0009255884837335983, 0.004751748284256146, 0.0005749259447365244, 0.0016428701090387622]]}