{"coeffs": [-2.240500887830221e-07, -1.3275783460195473e-09, -0.3534143941191677, 0.020026227549154507], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [2.5985890725598115e-08, 1.1496570306965975e-08, 0.016453454335973918, 0.013427581984941435], "covariance": [[6.752665168027261e-16, -1.2099245544651975e-17, 1.8201028687470485e-10, -1.3444229821728018e-10], [-1.2099245544651978e-17, 1.3217112882301172e-16, 3.315500258463971e-11, 2.8428507675082464e-11], [1.8201028687470485e-10, 3.315500258463971e-11, 0.00027071615958597893, -2.834775919901335e-05], [-1.3444229821728018e-10, 2.8428507675082464e-11, -2.834775919901335e-05, 0.00018029995796232375]]}