[To Parent Directory] 8/31/2020 2:17 PM 4147123 pa_60-24.pdf 8/31/2020 2:17 PM 8007752 pa_60-24_fig_1.pdf 8/31/2020 2:17 PM 1976539 pa_60-24_fig_2.pdf 8/31/2020 2:17 PM 1671855 pa_60-24_fig_3.pdf 8/31/2020 2:17 PM 4344261 pa_60-24_fig_4.pdf