{"coeffs": [-5.380804270861171e-08, 0.00021615315937714447, 4.137702765350014, 0.5175886971703291], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [4.1905342852392686e-07, 1.2344539938951475, 2983.4933726274753, 3.4933235701096312], "covariance": [[1.7560577595765788e-13, -5.133698359317865e-07, -0.0012408091664132064, -1.4609790095785113e-06], [-5.133698368601295e-07, 1.523876663043681, 3682.9849224965033, 4.304343319359848], [-0.0012408091686479175, 3682.984922471646, 8901232.704512067, 10403.25332159124], [-1.4609790108985757e-06, 4.304343315495967, 10403.25331232302, 12.203309565483499]]}