{"coeffs": [-7.768860030311512e-09, -0.12636466642928296, 0.9846582520394112, 0.038004785791396635], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [4.323607282998333e-09, 495318.9242427944, 148691.43673275207, 0.06477840303955557], "covariance": [[1.8693579937596228e-17, -0.001398154767440368, 0.0004197169171958099, 1.9490898273695816e-10], [-0.001398154642301432, 245340836713.03912, -73649682486.55876, -31855.10739394031], [0.00041971687839619605, -73649682486.56679, 22109143357.650013, 9562.691570036615], [1.9490896974335255e-10, -31855.10796884184, 9562.691742759169, 0.004196241500355101]]}