{"coeffs": [-2.8623888634398906e-07, -1.9433904001614448e-08, -0.2822105439739786, 0.07273866975745005], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [2.2074728977993264e-07, 7.848106309888685e-08, 0.20491840433515152, 0.16979085416024384], "covariance": [[4.8729365945185557e-14, -4.3918996771067235e-15, 3.465656300904784e-08, -2.7681527159326488e-08], [-4.3918996771067235e-15, 6.15927726513146e-15, 1.5693118749486377e-09, 6.207830049845357e-09], [3.465656300904784e-08, 1.5693118749486377e-09, 0.041991552435264645, -0.016731853147996086], [-2.7681527159326485e-08, 6.2078300498453574e-09, -0.016731853147996086, 0.02882893415646519]]}