Orange spots and Ultimo reporte
Orange spots are sites of debris recovery (derived from "tail fin" tag on map)
"Ultimo reporte" is likely to be the last VHF transmission or reporting point when leaving the Brasilian radar controllers. This is when they transmitted estimating TASIL 50 min later (transmitted at 01:33 for TASIL at 02h23).
This transmission may have also included the turbulence report. (unless it was just a bit ealier). This was not explicit from BEA daily briefings from last week...