Notes. Noise bias (determined from the variance in flux density variation between adjacent points in the light curve) has been subtracted from the modulation index. ACF and GP refer to estimates from direct numerical computation of the ACF and the GP analysis, respectively. The errors on the GP scintillation rate estimates do not include the 10% uncertainty on the scintillation rate because of the uncertainty in the kernel parameters (to be added in quadrature). Although scintillation rates were used in the annual modulation fits, we also quote the timescales here for easy comparison to previous work. ND indicates that not enough scintels are observed for a robust timescale estimation. 1σ uncertainties are given in parentheses. In case of significantly asymmetric errors, the 1σ upper and lower bounds are given in the super- and subscript text, respectively.