{"coeffs": [-2.6087985588778433e-07, -1.777152044025275e-09, -0.3748993482353411, 0.020221628955118774], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [6.374725881083279e-08, 2.6351851155820805e-08, 0.032421495709093084, 0.02897761315494959], "covariance": [[4.063713005895298e-15, -8.900721550445161e-17, 8.97275004532481e-10, -7.596738312260183e-10], [-8.900721550445161e-17, 6.944200593385343e-16, 1.4468096376364151e-10, 1.5169486451354158e-10], [8.97275004532481e-10, 1.4468096376364154e-10, 0.0010511533840147412, -0.00011194227766669582], [-7.596738312260183e-10, 1.516948645135416e-10, -0.00011194227766669588, 0.0008397020641579076]]}