{"coeffs": [-1.0785211234055661e-07, 2.441711539502901e-06, 0.6660261385178307, 0.22664053783879365], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [1.3816823499396082e-07, 3.741547613606674e-06, 0.5466170378716209, 0.1367455528789142], "covariance": [[1.909046116134638e-14, -4.96898436389363e-13, -7.282185749543232e-08, -1.8676387192595144e-08], [-4.968984363894151e-13, 1.3999178544885798e-11, 2.0449187799071225e-06, 5.069943286706376e-07], [-7.282185749543966e-08, 2.044918779907114e-06, 0.29879018609154495, 0.07419701334721243], [-1.8676387192596147e-08, 5.069943286706132e-07, 0.07419701334720917, 0.018699346232159922]]}