{"coeffs": [-1.3013043812794691, 0.41669933307661794, -0.1748533138116893, 0.30873870719945085], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [4.74973716065382e-07, 4.2907789789200195e-07, 8.884681626217752e-08, 1.887394543662583e-07], "covariance": [[0.609782472075065, -0.4919945301824363, 0.04859665554629229, -0.23465171361334541], [-0.4919945301824363, 0.49763173714599723, 0.002275150764033987, 0.21249122713199448], [0.04859665554629229, 0.0022751507640339907, 0.02133632025977028, -0.009256798624700567], [-0.23465171361334541, 0.21249122713199448, -0.009256798624700567, 0.09628556254628418]]}