{"coeffs": [-9.154962302930233e-07, -1.6423656995933014e-09, -0.4576001935801733, 0.09813624359272294], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [1.4940838060948975e-06, 8.07007119984146e-08, 0.35050246374594807, 0.13711480927091294], "covariance": [[2.2322864196350155e-12, -4.9617216051198566e-14, 5.18353185158457e-07, -1.8614314740214605e-07], [-4.961721605119864e-14, 6.512604917051057e-15, -1.0289085282675395e-08, 6.2460960110132135e-09], [5.18353185158457e-07, -1.028908528267535e-08, 0.12285197709197965, -0.043578221524093075], [-1.8614314740214616e-07, 6.246096011013213e-09, -0.043578221524093096, 0.018800470921398835]]}