{"coeffs": [-2.7115670740496854e-07, 0.0003569591341378079, 2.4025111572791915, 0.3319474011421217], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 9.9999999999999995e-07, "errors": [2.135755371292444e-07, 0.07036971855968209, 66.97361871170594, 0.23563897013077903], "covariance": [[4.5614510060045255e-14, -1.4755462560223712e-08, -1.4047949338400547e-05, -5.007148697038721e-08], [-1.4755462557134004e-08, 0.004951897290168867, 4.712907644412579, 0.016510577204998593], [-1.4047949335485658e-05, 4.7129076444215166, 4485.465603340967, 15.71626787171334], [-5.007148696510523e-08, 0.016510577206682548, 15.71626787328622, 0.05552572424429417]]}