{"coeffs": [-5.399812725074093e-07, -3.156469248997156e-08, -0.2419723772538861, 0.04584015796294094], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [2.819914377481994e-08, 1.6734520444017682e-08, 0.014070812199559532, 0.012235302370414492], "covariance": [[7.951917096329662e-16, -5.4434436812457875e-17, 2.0002569606808883e-10, -1.7568895573569577e-10], [-5.4434436812457856e-17, 2.800441744912457e-16, 6.104813348288617e-11, 6.994218137928418e-11], [2.0002569606808883e-10, 6.104813348288617e-11, 0.00019798775595527334, -2.8548304356137954e-05], [-1.7568895573569574e-10, 6.994218137928418e-11, -2.8548304356137954e-05, 0.00014970262409547052]]}